A museum dedicated to the alleged Roswell Incident.

Where America's first doomsday cult awaited the end of the world.

This frequently-photographed waterfall takes only a short hike to visit.

Take a drunken tour inside the world's largest known geode.

An homage to everyone's favorite prehistoric cartoon family.

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

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

Where beautiful signs live on forever.

A favorite haunt of dinosaur loving children and hallucinogen loving hippies alike.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

A beautiful 62-acre Catholic shrine and botanical garden.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.