When you think of a road trip, most people immediately imagine the Grand Canyon, Niagara Falls or . They're such famous American landmarks that you might even feel like you've visited 'em already, even if you've never stepped foot on a plane. But there's one thing even people who've made it to South Dakota (home of that famous presidential mountain) have probably never noticed.
Right behind President Abraham Lincoln's noggin is a hidden door that provides access to The Hall of Records. Surprised? We were too! The sculptor, Gutzon Borglum (who you may not want to go down the rabbit hole of Googling — as he didn't have a the best reputation overall), wanted the room to serve as a space for some of the country's most important moments in history. Borglum died before he could finish the room, so it sat unfinished for decades until being completed in the 1990s.
Today, the room features porcelain panels with text from important documents like the Constitution and Bill of Rights. Unfortunately, tourists aren't permitted to visit the room — mostly because it's so difficult to get to — so even if you do stop by Mount Rushmore, you probably won't be able to take a gander at this novelty.
But you can take a peek inside the room in this video: