Congressman reveals hidden secret passageways from America’s founding under Capitol floorboards

Under the floorboards of the U.S. Capitol lie hidden staircases and passageways left over from the iconic building’s original construction in the 18th century, a viral video posted by Republican North Carolina Rep. Tim Moore shows. 

“Construction started in the 1700s and there are all sorts of little hidden passageways. As you saw, I just pulled this cover up, and you can see,” Moore said in a video posted to his official congressional X account on Friday, showing a secret door in the floor of the Capitol. 

The U.S. Capitol’s construction was commissioned in 1793, with President George Washington laying the cornerstone that same year. The original building was completed in 1826, with various expansions made across the decades, such as a visitor center that opened in 2008. 

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Moore took viewers inside the Capitol’s Lincoln Room, which he said is one of his favorites to show visitors to Washington, D.C., noting it’s where Abraham Lincoln would sit by a fire and read letters when he served as a congressman representing Illinois from 1847-1849. 

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“But the most interesting part of the room is underneath the floorboards,” Moore posted to X. 

The North Carolina Republican opened a hidden door on the floor, revealing a dusty and historic staircase leading to what appeared to be another room below. 

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“We’re just off of what’s called Statuary Hall, which at one time was the actual House chamber.… But this is just an example of some of the little hidden secrets in the Capitol,” Moore said. 

The lawmaker added that he heard through Capitol building lore that the staircase under the Lincoln Room was used by British soldiers in the War of 1812 to set fire to the historic building. Known as the “Burning of Washington,” British soldiers in August 1814 set fire to the U.S. Capitol, the Washington Navy Yard and the White House – which was then known as the Presidential Mansion – before storms put out the fires and military personnel were called to D.C. to defend it from British forces. The War of 1812 ended in 1815. 

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Moore’s tour of the secret staircase comes as President Donald Trump prepares to kick off America’s 250th anniversary of its founding on July 4, 2026. Trump signed an executive order just days after his inauguration this year detailing how his administration will prepare for the massive celebration, including launching a White House task force, building monuments celebrating the nation’s founding and historical leaders, and protecting monuments from vandalism following such attacks during the riots and protests that swept the nation in 2020. 

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The Army will hold a 250th anniversary of its founding next month with a planned parade that will stretch from Arlington, Virginia, to the National Mall.