Each summer, the migratory bats living beneath the bypass form "batnadoes" at dusk.

Pillars made of 700 pieces of luggage climb to the ceiling of Sacramento Airport's baggage claim.

The California capital city once stood 10 feet lower than it does today.

Art Deco stylings conceal the true nature of this bridge.

This 15-story mural celebrates the 50th anniversary of the musician's iconic "At Folsom Prison" album.

This museum looks at the history of one of America's most famous prisons and most beloved albums.

This 19th century hydroelectric powerhouse was the first of its kind.

Visitors to this library are in for a real-world education in modernist architecture.

Craggy concrete faces are hidden in the walls of this artificial cave along the San Antonio River.

This replica of the Greek structure is in the heart of Nashville.

America's post-nuclear-attack chambers of Congress.

This roadside attraction has been serving out its fair share of hearty folklore and chaos since 1858.

This North Carolina store preserves a historic moment in America's movement for racial equality.

A stack of stones steeped in Irish folklore, much like the hero they're connected to, hide in plain sight.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

A mailbox that saved a nature reserve.

The North Carolina grounds are leased in perpetuity to the British Commonwealth for as long as the WWII sailors are buried there.

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.

Down the road from where the Wright brothers lifted off is another flight tribute practically hidden from sight in the woods.

Rural churches in the middle of nowhere with religious frescoes by famous artist.

A former Oz-themed attraction that has fallen into disrepair, but still holds some of the original magic.

One of the oldest Black communities in western North Carolina and one of the largest Black Mennonite congregations in the country.

A 315-foot spire jutting out from the Blue Ridge Mountains makes for breathtaking views.

An abandoned village that doubled as "The Hunger Games"' post-apocalyptic wasteland is up for grabs.