The hallucinogenic center of the ancient world.

Gorgeous cave resemble a winter wonderland.

A limestone wonderland of water and subterranean secrets.

A spring-fed pool so deep it's used for scuba diving as well as swimming.

Deadliest lake in the world suffocated over 1,746 people in one night.

This 150 foot seven-tiered cascading waterfall is one of the hidden gems of the White Mountains.

Dramatic river bend surrounds a natural red-rocked pedestal.

An open air haven for tropical monkeys in the damp moors of the English country.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

This giant bronze Buddha, the third largest in Japan, is the last in an ill-fated series of statues.

Landbridge created by the South Korean version of Moses.

A natural gas leak provides a flickering flame beneath a waterfall.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

Take in a rare, face-to-face glimpse of Lady Liberty at this tucked away Red Hook park.

Italian cave with exceptional acoustics and an unsavory history.

The tragic reality of a town riddled with rumors of haunts, chemical spills, and serial killers.

For those with no fear of heights: a skywalk 4,700 feet up on a Chinese mountain.

Take a cruise with no movement but plenty of style in this one-of-a-kind boat mall.

Europe's second largest ossuary wasn't discovered until 2001.

Teeming with illegal goods and services, this towering maze of vice is also a popular tourist accommodation.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

An ancient Chinese temple where even the emperor dressed like a farmer in the name of the harvest.

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.

Smooth basaltic rocks tell a tale of ancient glacial waterfalls.