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

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

A motley, fantastical agglomeration of unlikely houseboats along the Shoreham-by-Sea riverbank.

These giant sculptures are supported by a bizarre menagerie of feet.

Thousands of ancient rock carvings are scattered just off the highway.

Space-age minarets towering over Islamabad.

Massive fortress bastions in the desert of Cholistan.

Lunar landscape, a mud volcano and bizarre rock formations.

A place as enchanting as the journey to reach it is harrowing.

A 17th-century mosque that was used for war more than worship.

Known as the most dangerous bridge in the world, the Hussaini Hanging Bridge is only one of many precarious rope bridges in Northern Pakistan.

This grand Pakistani mausoleum can only be accessed via an almost 1,000 foot long alleyway.

One of the largest necropolises in the world is home to a stunning array of historic Middle Eastern tombs.

This lost city belongs to one of the earliest civilizations in the world.

Reputedly haunted sandstone necropolis with exquisite stone carvings.

This dazzlingly turquoise mountain lake was created in the wake of a natural disaster.

These tiered rice paddies were carved into the hillsides 2,000 years ago.

This burial cave houses around 100 ancient coffins, neatly stacked to form a massive wall.

A very peculiar and macabre statue calls Tugatog Cemetery home.

It is believed that the historic tower is sinking at a rate of an inch a year, though no one is completely sure why.

A 50-foot-tall statue of Jesus where a stairway transports the faithful into his body.

Nearly 100 concrete graves lie hidden just beyond the pristine waters along the coast.

Church organ in the Philippines constructed out of bamboo.

This tiny island protects a number of rare bird species by only allowing visitors to set foot on the beach.