Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

A well kept and well documented look at the Bruneian Sultan's life and successes.

A symbol of Islam in oil-rich Brunei.

Ferdinand Magellan dubbed the world's largest water village the "Venice of the East."

Elaborate series of tunnels where traces of mass suicide are still visible.

An extraordinary natural landscape of mountains, waterfalls, and rocky cliffs riddled with tunnels.

A waterfall runs right through the middle of this Taiwanese shrine to the hundreds of workers killed while building a nearby highway.

The site of many tense prisoner exchanges across the Military Demarcation Line between North and South Korea.

South Korea's largely symbolic, barely used gateway to the North.

Largest lake in Great Britain measured by surface area.

Final palace complex of the last of 29 Kokand rulers.

This retro, UFO-like structure is a remnant of the Soviet-era circus.

This Soviet-era athletic and recreation facility is the highest ice skating rink in the world.

A modern tower, symbolizing the legend of a golden egg on top of the tree of life.

An entertainment center in a huge transparent tent.

Iconic pyramid from famed British architect Norman Foster designed to represent all of the world's religious faiths.

The world's second-tallest flagpole stands proud despite dropping rank.

The largest Lenin statue in Central Asia was moved to an empty field rather than being destroyed.

This dark, damp, perilous tunnel is the only passage from north to south Tajikistan.

An eccentric dictator's take on a Turkmen version of Disneyland.

If you want to get married in the White Marble City of Ashgabat, you should do it in this surreal disco ball building.

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

This "tower of death" has acted as an observatory, a religious hub, and an executioner's lair.

Light still pours into the ruins of this ancient Islamic observatory.