The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

A tunnel with windows, so you don't miss out on the impressive views.

The unusual patterns in this rock formation result from two distinct modes of weathering.

This ancient cave is home to a museum, bar, and is filled with fluorescent minerals.

The oldest attraction in Disneyland is a prehistoric stump that Walt may have bought for his wife.

This Scottish burial tomb once held hundreds of ancient eagle bones.

The heads of two giant mythological water horses honor Scotland's horselord past.

A psychedelic labyrinth on the San Francisco bay.

This Delaware River bridge is emblazoned with a catty slogan from a more prosperous time.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

An unexpected and peaceful oasis on a hillside.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

These four islands right offshore have waterfalls, colorful lights, fancy buildings, and a secret purpose.

Remains of a Greek freighter trapped off of Rocky Point in 1961.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Two mammoth statues inspired by equally tall tales lure tourists to this roadside attraction.

A tree grown from astronaut seeds which were exposed to cosmic rays.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

Fake rail crossings mark the site of an influential doctor's demise.

Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.

This mountaintop beacon is only lit three times a year but shines like some kind of all-seeing eye.

Towering basalt columns, a creation of fire and ice.

Quite simply the largest tree in the world (by volume).