One of Philadelphia's largest murals resides hidden under this bridge.

The oldest surviving presidential residence in the United States.

A symbol of Texas pride.

The surprising home of the iconic Santa Monica Pier Ferris Wheel.

The "world’s largest honky-tonk" also has its own indoor rodeo arena.

This one-room schoolhouse in rural Arkansas dates to the 1920s, but looks like it could be the 1820s.

This mountaintop refuge rehabilitates tigers, lions, bears, and more from illicit wildlife trade—and offers overnight lodging.

This mill has survived a tumultuous past to still produce flour and cornmeal.

This Wild West attraction is alive with glitching automatons.

The world's only three-story rotary jail is now a museum to a bizarre trend in prison design.

No one knows exactly how deep the world’s deepest geothermal hot spring is.

One of the stops along the fateful journey of the Donner Party.

This museum offers an actual time machine back through Colorado's past.

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

In the 1950s, two women saved this grand theater in the Colorado mountains from demolition.

This giant green head remembers one of America's jazz giants.

The iconic remains of the original Academic Hall that burned down in 1892.

The famous greeting card maker owns a collection of paintings by the famed surrealist.

This unconventional used book store was once in the news for the surprising act of burning books.

A museum packed with instruments, lyrics, and other mementos of the American folk icon.

This erect, phallic geological spire wasn't always named so domestically.

A miniature baseball stadium honoring Johnny Rosenblatt Stadium, home of the College World Series from 1950-2010.

A museum chronicling pioneer life constructed over Interstate 80.

The Bucyrus-Erie model 1850B electric shovel, or "Big Brutus," the largest existing electric shovel in the world.