Only a few pieces remain of a grand 16th-century water clock that once announced the changing hours with the sound of bells, gongs, and drums.

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

One of only a handful of seaside temples in Korea, this sacred space is home to a legendary healing Buddha statue and a traffic safety prayer pagoda.

This 317-ton walkable art installation is an homage to Korea's "City of Steel."

This grand temple complex from the Old Silla era of Korea is home to a stone pagoda that was build in the 7th century.

This human-made pond is part of a Korean palace complex first built in the 7th century.

An early Korean refrigerator.

Numerical symbolism abound at East Asia's oldest observatory.

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

To enter the lower hall of this temple, you must first walk through a dragon.

Trees emerge from the surface of this small man-made reservoir.

The largest and oldest brick pagoda in Korea.

A traditional village rooted in the Joseon Dynasty.

A thriving surf community exists in relative remoteness along the former boundary between North and South Korea.

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

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

This 1920s Amsterdam neighborhood was built as a giant experiment in concrete construction.

This one-time health resort was used by aristocrats around the world.

A crumbling World War I fort that is reached through a series of concrete tunnels.

The summer residence of a Spanish ambassador who brought viticulture to an impoverished region, sparking its transformation into one of the world's best wine regions.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

The "dragon babies" of southeastern Europe.

A miniature train-ride through Slovenia's largest cave system.

A beautiful drive through the foot of the Alps traces the path of 15th-century Turkish raids.