This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

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

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

A lush green oasis in the middle of Chicago.

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

This knobby, drooping New Orleans oak is a favorite place both for climbing and for meeting giraffes.

Where manatees are the snowbird vacationers in these balmy Florida springs.

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

A technicolor place of worship for Elevationists.

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

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

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

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

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

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

An underwater city for the dead.

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

Hollowed out cedar log tubs set in an ancient towering forest.

A DIY art gallery/music venue/lecture hall dedicated to video game culture.

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 heavenly experience, right here on Terra Firma.

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

Rainbow-hued local gem in Venice.

Olfactory delights in San Francisco's Botanical Gardens.