Rumor had it that these concrete crosses scattered across the Arizona scrubland helped align spy satellites. (They didn’t.)

Come for the pizza, stay for a performance on the world's largest theater pipe organ.

The eroded core of an ancient volcano is now accessible by a short hike.

Narrow slot canyons in a badland eroded into soft sedimentary rock provide an otherworldly landscape in this remote Nevada state park.

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.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

The graffiti-covered ruins of an abandoned trading post in the middle of the Navajo Nation.

Red sandstone structures dominate this landscape, which has been inhabited for some 5,000 years.

The largest copper mine in Arizona, this enormous open pit emerges from the hills like an alien landscape.

See massive fossils that are over 200 million years old in northeastern Arizona.

Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.

An abandoned water park overtaken by the dunes.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

Here, exhibits come with a side of edible history.

The most confusing clock in New York.

Lie in a hammock where George Washington stood.

A bit of retro transportation flair preserved in the world's largest department store.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

Become a prohibition rebel.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Ride the subways of yesteryear.