Architectureal fantasy quarter of Rome.

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

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

The most visited, and possibly most controversial, museum in Germany.

Macabre astrological automaton clock dating to the late 1400s.

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

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

A submerged archeological park still holds the wonders of a Roman Sodom.

All that's left of the quintessential "cabin in the woods."

This geothermal hot spring hides beneath a slowly growing mineral dome.

Staves, storm-calling, and of course, necropants.

This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

360° views of the city plus five floors of optical illusions and hands-on science.

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

A heavenly experience, right here on Terra Firma.

Odd outsider art installations surround a Gold Rush-era ghost town.

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

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

A beautiful, dense forest in the shadow of Mount Fuji, with a tragic reputation.

This naturally-sourced hot spring is now home to a clothing-optional resort.

A hip bar decorated with walls of golden skulls.

A hand-built folk art installation covered with messages of God's love.