Captured in 1968, the Cold War spy ship is the only U.S. Navy vessel being held by a foreign government.

A former palace transformed into a mausoleum for North Korea's supreme leaders.

Pyongyang’s Arch of Triumph is the second tallest triumphal arch in the world.

A giant bronze monument to Kim Il-sung and Kim Jong-il is one of the most sacred sites in North Korea.

One of the largest public squares in the world, named after the former DPRK supreme leader.

A highly symbolic tower in honor of Supreme Leader Kim Il-sung's personal philosophy.

A symbol of the Workers' Party of North Korea.

A bizarre collection of gifts to North Korean dictator Kim Jong Il from the despots of the world.

A small 12th-century temple surrounded by waters believed to have curative properties.

This collection of reclaimed landmines acts as both an exhibition of their deadly history and as a shelter for children affected by them.

The capital of Cambodia is named after the hill on which this ancient temple complex stands.

One of the biggest markets in Asia, under one of the continent's largest domes.

Bombed and burned, this monument represents the often controversial ties between Vietnam and Cambodia.

Khmer Rouge's high security prison.

5,000 skulls in memorial to those killed by the Khmer Rouge.

This bridge made famous in a novel and on-screen wasn't actually built over the river Kwai.

This dazzling Buddhist temple was constructed from over one million ceramic tiles salvaged from a British shipwreck.

One of the world's tallest flagpoles.

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

The glacier tucked within a New Zealand rainforest.

A glacier pocked with ice caves and surrounded by rainforests.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

The ruins of New Zealand's largest classical-style church.

Tubing through a cave lit with glowworms is a magical underground experience.