The tunnel's elegant proportions keep you snug with no claustrophobia freak-out.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Steadily reminding Czechia of its past.

Macabre astrological automaton clock dating to the late 1400s.

Secret North Korean passage discovered below the world's most dangerous border.

The best place for scenic views of the DMZ and North Korea.

An arts and culture complex that was once a derelict American military installation in the civilian control zone of the DMZ.

A large visitor's complex and place of remembrance on the outskirts of the DMZ.

This tomb's name derives from a famous painting of a white horse found inside.

Numerical symbolism abound at East Asia's oldest observatory.

An early Korean refrigerator.

The world's longest bridge fountain has hundreds of nozzles that create a beautiful, illuminated spectacle.

Home to more than 13,000 pieces of war memorabilia and military equipment.

The supreme shrine of the state.

The site of the last royal wedding in Korea.

A chilling monument to Korean patriots who resisted the Japanese occupation.

A unique structure located on the grounds of one of five grand palaces that were built by the Joseon dynasty.

This pagoda was once the central feature of a Buddhist temple that no longer exists.