{"name":"The Octagon House","city":"Washington, D.C., District of Columbia","canonical_url":"https://gydeinfo.com/washington-dc/places/the-octagon-house/","markdown_url":"https://gydeinfo.com/washington-dc/places/the-octagon-house.md","updated_at":"2026-06-20T07:06:52.490819+00:00","facts":[{"claim":"The official site says the Octagon House offers an opportunity to explore a variety of educational venues.","citation":"https://octagonhouse.org/educational-opportunities/","source_title":"Educational Opportunities - Loren Andrus Octagon House","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:37.517087+00:00","fact_type":"history","as_of":"2026-06-20","confidence":0.9},{"claim":"Educational tours take approximately 40–60 minutes depending on group size.","citation":"https://octagonhouse.org/educational-opportunities/","source_title":"Educational Opportunities - Loren Andrus Octagon House","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:37.517087+00:00","fact_type":"hours","as_of":"2026-06-20","confidence":0.9},{"claim":"The tours page repeats that summer open house self-guided tours are held March through October on the third Sunday of the month from 1–4 pm, and all other tours are by appointment only.","citation":"https://octagonhouse.org/tours/","source_title":"Tours - Loren Andrus Octagon House","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:36.751032+00:00","fact_type":"hours","as_of":"2026-06-20","confidence":0.99},{"claim":"The tours page states admission is $7.00 per person for summer open house self-guided tours.","citation":"https://octagonhouse.org/tours/","source_title":"Tours - Loren Andrus Octagon House","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:36.751032+00:00","fact_type":"admission","as_of":"2026-06-20","confidence":0.98},{"claim":"Private guided tours can be arranged by appointment for $10.00 per person and take approximately one hour.","citation":"https://octagonhouse.org/tours/","source_title":"Tours - Loren Andrus Octagon House","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:36.751032+00:00","fact_type":"admission","as_of":"2026-06-20","confidence":0.99},{"claim":"Group tours must be booked at least three weeks in advance and require a minimum of 10 people with $100 prepaid and non-refundable.","citation":"https://octagonhouse.org/tours/","source_title":"Tours - Loren Andrus Octagon House","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:36.751032+00:00","fact_type":"accessibility","as_of":"2026-06-20","confidence":0.94},{"claim":"The official history says the house was an active place for social events.","citation":"https://octagonhouse.org/history/","source_title":"History – Loren Andrus Octagon House","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:35.955757+00:00","fact_type":"history","as_of":"2026-06-20","confidence":0.96},{"claim":"The page says Loren and Lucina’s eight children entertained friends and family with dances, games, taffy pulls, and songs around the piano.","citation":"https://octagonhouse.org/history/","source_title":"History – Loren Andrus Octagon House","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:35.955757+00:00","fact_type":"anecdote","as_of":"2026-06-20","confidence":0.97},{"claim":"The official site identifies the place as the Loren Andrus Octagon House in Washington, Michigan, at 57500 Van Dyke Avenue, PO Box 94118, Washington, MI 48094.","citation":"https://octagonhouse.org/","source_title":"Loren Andrus Octagon House","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:35.125540+00:00","fact_type":"location","as_of":"2026-06-20","confidence":0.99},{"claim":"Public tours are by appointment, with a summer open house on the third Sunday from March through October, 1 pm–4 pm.","citation":"https://octagonhouse.org/","source_title":"Loren Andrus Octagon House","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:35.125540+00:00","fact_type":"hours","as_of":"2026-06-20","confidence":0.98},{"claim":"General admission is $7.00; children under 4 and members are free.","citation":"https://octagonhouse.org/","source_title":"Loren Andrus Octagon House","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:35.125540+00:00","fact_type":"admission","as_of":"2026-06-20","confidence":0.98},{"claim":"Loren Andrus began building the Octagon House in 1858 with help from his brother-in-law David Stewart, using Fowler’s book, A Home For All as a guide.","citation":"https://octagonhouse.org/","source_title":"Loren Andrus Octagon House","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:35.125540+00:00","fact_type":"history","as_of":"2026-06-20","confidence":0.99},{"claim":"The Octagon House was completed in 1860 and is described as the 'house of eights.'","citation":"https://octagonhouse.org/","source_title":"Loren Andrus Octagon House","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:35.125540+00:00","fact_type":"history","as_of":"2026-06-20","confidence":0.99},{"claim":"The house was listed on the National Register of Historical Places in 1971 and recognized as a State of Michigan Historic site in 1972.","citation":"https://octagonhouse.org/","source_title":"Loren Andrus Octagon House","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:35.125540+00:00","fact_type":"significance","as_of":"2026-06-20","confidence":0.98},{"claim":"The official visitor page says the site is open Friday-Saturday from 11:00 am to 4:00 pm and offers private guided tours at set times or by appointment.","citation":"https://architectsfoundation.org/the-octagon/visiting/","source_title":"Plan Your Visit - Architects Foundation","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:26.710344+00:00","fact_type":"hours","as_of":"2026","confidence":0.99},{"claim":"Guided tours are included with admission.","citation":"https://architectsfoundation.org/the-octagon/visiting/","source_title":"Plan Your Visit - Architects Foundation","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:26.710344+00:00","fact_type":"admission","as_of":"2026","confidence":0.95},{"claim":"The visitor page notes ongoing construction with the sidewalk along 18th Street NW currently closed.","citation":"https://architectsfoundation.org/the-octagon/visiting/","source_title":"Plan Your Visit - Architects Foundation","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:26.710344+00:00","fact_type":"accessibility","as_of":"2026","confidence":0.88},{"claim":"The Octagon is an accredited museum within the American Alliance of Museums.","citation":"https://architectsfoundation.org/the-octagon/visiting/","source_title":"Plan Your Visit - Architects Foundation","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:26.710344+00:00","fact_type":"significance","as_of":"2026","confidence":0.9},{"claim":"The Octagon was built in 1800-01 as a winter townhouse for Colonel John Tayloe III and was designed by William Thornton.","citation":"https://www.whitehousehistory.org/the-octagon","source_title":"The Octagon - White House Historical Association","source_type":"manual","allowed_use":"facts_with_citation","retrieved_at":"2026-06-20T06:09:25.939506+00:00","fact_type":"history","as_of":"2026","confidence":0.98},{"claim":"The Madisons moved into the Octagon on September 8, 1814, after the White House was burned.","citation":"https://www.whitehousehistory.org/the-octagon","source_title":"The Octagon - White House Historical Association","source_type":"manual","allowed_use":"facts_with_citation","retrieved_at":"2026-06-20T06:09:25.939506+00:00","fact_type":"notable_events","as_of":"1814","confidence":0.98},{"claim":"President Madison set up his office in the circular study on the second floor.","citation":"https://www.whitehousehistory.org/the-octagon","source_title":"The Octagon - White House Historical Association","source_type":"manual","allowed_use":"facts_with_citation","retrieved_at":"2026-06-20T06:09:25.939506+00:00","fact_type":"notable_events","as_of":"1814","confidence":0.93},{"claim":"The Madisons held their first Wednesday evening levee at the Octagon on September 21, 1814.","citation":"https://www.whitehousehistory.org/the-octagon","source_title":"The Octagon - White House Historical Association","source_type":"manual","allowed_use":"facts_with_citation","retrieved_at":"2026-06-20T06:09:25.939506+00:00","fact_type":"anecdote","as_of":"1814","confidence":0.9},{"claim":"The Octagon House is described as one of the most important historic buildings in Washington.","citation":"https://durablerestoration.com/projects/the-octagon-house/","source_title":"The Octagon House - The Durable Restoration Company","source_type":"manual","allowed_use":"facts_with_citation","retrieved_at":"2026-06-20T06:09:24.343046+00:00","fact_type":"history","as_of":"1899","confidence":0.84},{"claim":"The Octagon House was built in 1799 by Colonel John Tayloe III.","citation":"https://durablerestoration.com/projects/the-octagon-house/","source_title":"The Octagon House - The Durable Restoration Company","source_type":"manual","allowed_use":"facts_with_citation","retrieved_at":"2026-06-20T06:09:24.343046+00:00","fact_type":"who_built","as_of":"1799","confidence":0.95},{"claim":"The house was designed by Dr. William Thornton and James Hoban.","citation":"https://durablerestoration.com/projects/the-octagon-house/","source_title":"The Octagon House - The Durable Restoration Company","source_type":"manual","allowed_use":"facts_with_citation","retrieved_at":"2026-06-20T06:09:24.343046+00:00","fact_type":"who_built","as_of":"1799","confidence":0.89},{"claim":"The American Institute of Architects purchased the building in 1923 and used it as headquarters for over 70 years.","citation":"https://durablerestoration.com/projects/the-octagon-house/","source_title":"The Octagon House - The Durable Restoration Company","source_type":"manual","allowed_use":"facts_with_citation","retrieved_at":"2026-06-20T06:09:24.343046+00:00","fact_type":"history","as_of":"1923","confidence":0.88},{"claim":"The Octagon House is located at 1799 New York Avenue NW in the Foggy Bottom neighborhood of Washington, D.C.","citation":"https://en.wikipedia.org/wiki/The_Octagon_House","source_title":"The Octagon House","source_type":"manual","allowed_use":"facts_with_citation","retrieved_at":"2026-06-20T06:09:23.515158+00:00","fact_type":"location","as_of":"1799","confidence":0.94},{"claim":"The house was built in 1799 for John Tayloe III.","citation":"https://en.wikipedia.org/wiki/The_Octagon_House","source_title":"The Octagon House","source_type":"manual","allowed_use":"facts_with_citation","retrieved_at":"2026-06-20T06:09:23.515158+00:00","fact_type":"who_built","as_of":"1799","confidence":0.92},{"claim":"The Octagon House opened as a museum in 1970.","citation":"https://en.wikipedia.org/wiki/The_Octagon_House","source_title":"The Octagon House","source_type":"manual","allowed_use":"facts_with_citation","retrieved_at":"2026-06-20T06:09:23.515158+00:00","fact_type":"history","as_of":"1970","confidence":0.9},{"claim":"The Octagon House was declared a National Historic Landmark in 1960.","citation":"https://en.wikipedia.org/wiki/The_Octagon_House","source_title":"The Octagon House","source_type":"manual","allowed_use":"facts_with_citation","retrieved_at":"2026-06-20T06:09:23.515158+00:00","fact_type":"significance","as_of":"1960","confidence":0.92},{"claim":"The museum is open to the public on Fridays 11am-4pm and the first and third Saturdays 11am-4pm.","citation":"https://en.wikipedia.org/wiki/The_Octagon_House","source_title":"The Octagon House","source_type":"manual","allowed_use":"facts_with_citation","retrieved_at":"2026-06-20T06:09:23.515158+00:00","fact_type":"hours","as_of":"2026","confidence":0.8},{"claim":"The Octagon House was completed in 1800 and was among the grandest townhouses in the nation at the time.","citation":"https://www.nps.gov/places/octagon-house.htm","source_title":"Octagon House (U.S. National Park Service)","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:22.674949+00:00","fact_type":"architecture","as_of":"1800","confidence":0.97},{"claim":"The Octagon House is designated a National Historic Landmark.","citation":"https://www.nps.gov/places/octagon-house.htm","source_title":"Octagon House (U.S. National Park Service)","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:22.674949+00:00","fact_type":"significance","as_of":"1960","confidence":0.98},{"claim":"The Octagon House has been in the care of the American Institute of Architects since 1899.","citation":"https://www.nps.gov/places/octagon-house.htm","source_title":"Octagon House (U.S. National Park Service)","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:22.674949+00:00","fact_type":"history","as_of":"1899","confidence":0.96},{"claim":"The building is an example of late Federalist architecture with Coade stone decorative elements imported from England.","citation":"https://www.nps.gov/places/octagon-house.htm","source_title":"Octagon House (U.S. National Park Service)","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:22.674949+00:00","fact_type":"architecture","as_of":"1800","confidence":0.95},{"claim":"The Octagon House served as the temporary home of President James Madison and First Lady Dolley Madison in 1814.","citation":"https://www.nps.gov/places/octagon-house.htm","source_title":"Octagon House (U.S. National Park Service)","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:22.674949+00:00","fact_type":"notable_events","as_of":"1814","confidence":0.99}],"sources":[{"title":"Educational Opportunities - Loren Andrus Octagon House","url":"https://octagonhouse.org/educational-opportunities/","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:37.517087+00:00","license":"unknown"},{"title":"Tours - Loren Andrus Octagon House","url":"https://octagonhouse.org/tours/","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:36.751032+00:00","license":"unknown"},{"title":"History – Loren Andrus Octagon House","url":"https://octagonhouse.org/history/","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:35.955757+00:00","license":"unknown"},{"title":"Loren Andrus Octagon House","url":"https://octagonhouse.org/","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:35.125540+00:00","license":"unknown"},{"title":"Plan Your Visit - Architects Foundation","url":"https://architectsfoundation.org/the-octagon/visiting/","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:26.710344+00:00","license":"unknown"},{"title":"The Octagon - White House Historical Association","url":"https://www.whitehousehistory.org/the-octagon","source_type":"manual","allowed_use":"facts_with_citation","retrieved_at":"2026-06-20T06:09:25.939506+00:00","license":"unknown"},{"title":"The Octagon House - The Durable Restoration Company","url":"https://durablerestoration.com/projects/the-octagon-house/","source_type":"manual","allowed_use":"facts_with_citation","retrieved_at":"2026-06-20T06:09:24.343046+00:00","license":"unknown"},{"title":"The Octagon House","url":"https://en.wikipedia.org/wiki/The_Octagon_House","source_type":"manual","allowed_use":"facts_with_citation","retrieved_at":"2026-06-20T06:09:23.515158+00:00","license":"CC BY-SA 4.0"},{"title":"Octagon House (U.S. National Park Service)","url":"https://www.nps.gov/places/octagon-house.htm","source_type":"official","allowed_use":"canonical_data","retrieved_at":"2026-06-20T06:09:22.674949+00:00","license":"unknown"}],"commercial_actions":[],"source_policy":{"booking_links_are_evidence":false,"denied_as_evidence":["google_places","google","yelp","tripadvisor"],"allowed_uses":["canonical_data","facts_with_citation","anecdote"]}}