This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

A museum dedicated to the alleged Roswell Incident.

A modernist landscape of water and sci-fi concrete.

The magic's in the hole!

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.

A look into the Church of Scientology's deeply unfavorable view of psychiatry.

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

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

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

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

Left untouched since a double murder-suicide in the 1960s, Los Feliz murder mansion remains a neighborhood mystery.

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

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

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

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

Rainbow-hued local gem in Venice.

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.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.