Smooth basaltic rocks tell a tale of ancient glacial waterfalls.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

This large pile of traveler-curated rocks by the dry lakebed is a longstanding tradition on the Old Mojave Road.

This giant temperature attraction created some giant electric bills.

Once a strategically imperative naval base, portions of this Bermuda dock complex now serve cruise ships.

In Bermuda, this formal naval residence has become a go-to for cliff-jumpers and hikers.

The world's smallest drawbridge.

Watch the newest land on the planet form before your eyes.

The fifth-longest natural arch in the world, and the longest outside China.

This raised bulls-eye visible from space was the subject of an intense geologic controversy.

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

Boise State's stadium was the first non-green football field in the world.

An ancient fortification lives on in this Chinese city.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

An homage to everyone's favorite prehistoric cartoon family.

These elusive, isolated rodents evolved into a distinct, locally iconic subspecies.

The remnants of a creative early method of wildfire prevention.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

This small interfaith chapel lies not far from the rim of the Grand Canyon.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

China's beehive-shaped pyramids house the remains of a lost kingdom.

These tiny statues form a terracotta army from China's Han dynasty.