Initially built for a Chinese princess and sultana, this well was used to secretly assassinate some 200 Portuguese colonizers.

Not far from the bustle of Kuala Lumpur is an amazing waterfall that navigates seven vertical drops.

Hang out with thousands of butterflies in one of the world's largest such enclosures.

More than 100 Hindu temples are slowly being swallowed by the forest.

This eccentric cave dwelling is bizarre even by the standards of a subterranean town.

This shrine to film's most iconic wasteland wanderer is located in the very outback where the movies were shot.

A sparkling sandstone cliffside that's worth a visit while it still exists.

An opal mining town in the middle of Australia where people live, worship, and shop underground.

This extraordinary geological oddity resembles human-made pavement.

This gracefully curving formation looks like a massive wave that was suddenly turned to stone.

A castle hand-built by a Spanish dreamer in the Australian tropical jungle.

An abandoned railroad tunnel is now filled with bioluminescent bugs.

An Australian lake whose pink hue defies scientific explanation.

Finding the exact middle of a giant land mass is hard to determine, but this spot managed to do the trick.

Kakadu National Park is known for its stunning beauty and its rock art, which represents the longest historical records of any continuous civilization on Earth.

Visitors can swim with vicious predators in Crocosaurus Cove's plastic daredevil enclosure.

World War II ended before these tunnels built to protect vital oil from Japanese bombs were ever used.

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

In the world's most bombed country relative to its size, this incredible organization helps pick up the pieces.

A mysterious, hidden cluster of Buddha sculptures carved into the rocks.

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

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

Thousands of effigies of Buddha watch from caves set high above a legendary river, plus whiskey.

A palace destined to never house a king.