This sharp turn was once the most dangerous part of the Singapore Grand Prix circuit.

Legend holds that a tortoise turned itself into this island to save two shipwrecked sailors.

The oldest bakkwa shop in Singapore is especially beloved during the Lunar New Year festivities.

The confluence of modernist and traditional architecture in this religious complex reflects the history of both the living and the dead being uprooted, displaced, and rehoused.

This museum is home to a sugar sculpture of the Berlin Airlift Memorial.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

This statue once earned the distinction as one of the "Three Major Disappointments of the World."

A historical convent known for taking in bad luck babies left on its doorstep is now an upscale shopping center.

This $62 million dollar temple was erected to house one little dental fragment of religious history.

A museum in the building where Nazi Germany signed its surrender tells the story of World War II from the Soviet perspective.

This conical hill was built as a testing ground for an engineer known as the Glider King.

An eerie collection of the surviving structures from a past celebration of the future.

The ruins of an ancient stadium that hosted gripping chariot and horse races.

These three pillboxes still remain as a witness of the Spanish Civil War in a park of Madrid.

A lush indoor jungle fills this bustling Madrid transportation hub.

Abandoned for decades, trains still pass through the now-restored remains of one of Madrid's first metro stations.

An ancient Egyptian temple in the middle of Madrid, Spain.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

This underground church is topped with a 500-foot cross that is seen by many as a beacon of fascist hubris.

The ghost town that ended up on Ebay.

A classic Route 66 landmark that was built with scrap lumber and is held together with kitsch and puns.