A 90-foot-tall psychedelic "tree" on the side of the highway has baffled passersby for decades.

Despite its lavish ornamentation, and wholesome lifestyle of its devotees, this mountain commune has faced its share of issues.

The largest burial mound in the United States holds the remains of prehistoric West Virginians.

Old car parts and assorted materials get turned into one man's mechanical treasures on the side streets of Cleveland.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

The angel of death appears to weep black tears at this grave marker.

The spectacular collection of one of the world's best woodcarvers.

Mausoleums, astronomy, and animatronic dinosaurs at this memorial to an assassinated American president.

All that remains of a gigantic earth-moving machine.

A favorite of Amelia Earhart, ranking among those rare bridges that can be crossed without changing sides of the river.

A circle of giant painted vases in the former pottery capital of the United States.

One of the last few period-correct, hand-operated canal locks in the country.

The only diamond mine in the world where you can keep what you find.

Thousands of pieces of art have been carved into the rock at the site of an ancient volcanic eruption.

Eat like pre-Columbian Native Americans in this New Mexico restaurant within the Indian Pueblo Cultural Center.

For those going through a life transition, a place to leave behind a piece of your former self.

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

This rusted car found in Petrified Forest National Park's Route 66 exhibit may be the most photographed abandoned car in the country.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

Thousands of artifacts relating to human sexuality, including the world's largest sex bike.

Las Vegas's very own 40-foot-tall fire-spewing praying mantis.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

This vintage animatronics show is the Vegas version of a walk through the woods.

A 250 million-year-old rock formation has earned a rather unique nickname.