The remains of a bustling turn-of-the-century park built to showcase the wonders of electricity.

A warning to the weak-kneed: This narrow bridge does its swinging eight stories high.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

Hidden beneath a bridge, this waterfall is known for the large amounts of graffiti painted on its base.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

When Motown musicians came to Nashville in the 1960s they stayed at this historic record-pressing company because hotels wouldn't host them.

A house turned museum is the real-life "home" of the fictional main character of The Wizard of Oz.

Moonbows over Kentucky.

The remains of an early 1900s dude ranch that operated until the 1970s.

This hot dog-shaped diner has moved all around Colorado, never been to New York.

A little-known hot spring haven right below the highway.

The highest bridge in America was built for an almost unnervingly small amount of money.

The largest self-built castle in the U.S., six decades in the making.

This naturally-sourced hot spring is now home to a clothing-optional resort.

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

Man-made geyser that rises to the exact height of the Gateway Arch.

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.