Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

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

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.

Walk through the actual strap iron cells and solitary chambers of Arizona Territory’s first prison.

This historic national park is covered in the stunning ruins of red rock pueblos.

Ancient pueblos built into the base of a natural canyon wall.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

The location along the shores of the Great Salt Lake of what was once called, "The Coney Island of the West", now sits barren due to arson and time.

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.

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

Terrapins of all colors and shapes are quick to bring fascination (and possibly long life) at this museum.

The largest pool at its elevation sits on top of one of the most expensive resorts in the world.

Singapore's landscaping project is home to 18 incredible Supertrees.

This futuristic bridge is one of the longest self-anchored pedestrian bridges in the world.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

Swarms of butterflies cannot compare to the awe inspired by the publicly-funded nakedness once displayed in this sunken garden.

North America's largest accredited model railroad museum.

Stroll through a wonderland of stupendous moss-covered trees.

Along a California highway is a kind of Jurassic Park made of metal.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Theme park featuring miniature replicas of European monuments.

Climb inside an iron crystal magnified 165 billion times its normal size.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.