One of the world's first dedicated bank buildings in the world is now the oldest one.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

This small museum nestled inside a souvenir shop is dedicated to Sweden's most well-known toy.

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

Sweden's "good old days" painstakingly re-created in a model village.

It houses the remains of a 17th-century version of the Titanic.

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

The home of half the world's population of critically endangered mountain gorillas.

This French colonial post office is arguably the grandest in all of Southeast Asia.

Artifacts and memories from the Vietnam war, located in a place that experienced it first hand.

An extravagant monument to an extravagantly unpopular Emperor.

This network of tunnels housed an entire village for years, and even had a hall for screening movies.

Giant pagoda houses the car that drove Thích Quảng Đức to his death by self-immolation.

This bridge is embedded with a giant steel dragon that breathes fire from its mouth.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

The freeway that never was.

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

Famous and forgotten figures lie beneath the faded headstones and decaying planks of wood.

The oldest structure in a beachside California city was built to serve eight students.

What began as an illegal art installation has become a symbol for unity, ocean awareness, and coastline preservation.

One of Vietnam's most iconic landmarks was built by Japanese traders and is now in danger of sinking.

This cavern was used as a hidden hospital and safe house during the Vietnam War.

Twice a day a speeding train passes only inches from the homes of this residential neighborhood.