One of Jeff Koons’s largest sculptures and his first commemorative work.

Visiting this grotto is symbolic of a spiritual journey into Nirvana.

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 ancient Corinthian helmet is South Korea’s only national treasure of Western origin.

All that remains of an ancient royal palace is a water channel that was used for drinking games.

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

An early Korean refrigerator.

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

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

Collected from all around Seoul, thousands of secondhand books create this photogenic tunnel.

A traditional village rooted in the Joseon Dynasty.

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

Numerical symbolism abound at East Asia's oldest observatory.

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

This former coal mine has been turned into a sprawling modern art complex.

Asia's largest limestone cave is home to a world of plastic goblins and gold mining history.

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

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

South Korea's only sex-themed park.

At low tide, you can see the remains of a 17th-century ship just off a Stockholm island.

The Swedish flag over this small naval fort signals that the nation is at peace.

Several cannonballs of mysterious origins decorate two buildings in Stortoget's main square.

A 12th-century church with a medieval fresco and an intriguing “Greek runestone.”

Located in an old church, this brewery produces a different kind of holy water.