Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

Tubing through a cave lit with glowworms is a magical underground experience.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

This grand gothic brewery has been pumping out suds for over a hundred years.

The magic's in the hole!

This lab's maddening silence is good for business but bad for sanity.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

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

The world's longest known cave system.

A modernist landscape of water and sci-fi concrete.

A lush green oasis in the middle of Chicago.

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

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

Hanging over one of Japan's "hidden valleys," these vine bridges must be remade every three years.

World-famous, Pink's still manages to keep its prized cult fetish status.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

A special shop catering to the needs of things that go bump in the night, and also helps kids become writers.

A fiery crater has been burning in the Karakum Desert since 1971.

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 huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

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

The longest hedge maze in the world.

Rebuilt remains of a temple to Roman god Mithras.

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