This small chapel is built of human bones and decorated with a golden skeleton.

Europe's official "zero-level," the equator of elevation.

Amsterdam's Red Light District leaves little to the imagination.

The history and future of cannabis.

A unique seaside cave where Aleister Crowley faked his own death.

One of the smallest bookstores on the planet.

The best place in the world to buy tinned fish.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

The world's oldest bookshop still in operation.

This once-forgotten oasis in the middle of Lisbon was first created over a century ago quite by accident.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

This tiered waterfall is so pretty it may cause visitors to cry tears of their own.

Buried in the Laos jungle is a sanctuary for bears that would have otherwise been milked to death by poachers.

World's largest cave was only discovered in 1991, and now offers tours to the public.

A complex and beautiful system of rice terraces covers a million acres over the mountains.

A boat ride through utter darkness, lit only by headlamps, reveals an emerald green pool locals believe is sacred.

Believed to have once stored either human remains or rice wine, thousands of mysterious stone jars lie in ruin.

A tangible and sobering reminder of an atrocity that took place during a secret war.

This striking landscape in northern Vietnam contains both geological and archaeological wonders.

Ha Long Bay's "Cave of Surprises" houses a popular phallic rock formation.

This cavern was used as a hidden hospital and safe house during the Vietnam War.

Walk through a clothing store, across a courtyard, and up several flights of stairs for delicious coffee with a side of beautiful views.

The lavish temple of the Cao Dai religion that includes Buddha, Mohammed, Joan of Arc, and Victor Hugo.

Arguing within this idyllic, circular volcanic lake is forbidden.