Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

A towering monument to war, located on a beautifully peaceful hill.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

This curious sculpture represents the perseverance needed to take to the skies.

One of the world's heaviest musical instruments towers within a popular urban park.

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

A restaurant and observation deck built in a unique broadcasting antenna.

Gardens representing parts of Asia, Europe, and the Mid East are tucked away among the Soviet-style buildings in East Berlin.

Started as a kitchen garden, now the second largest botanical garden in the world.

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

One of the largest Masonic temples in the world, created at the height of the oil boom in ostentatious style.

The most powerful laboratory radiation source in the world pulses with 1,000 times the electricity of a lightning bolt.

These massive mitts are made of 30 tons of devotional bronze.

When you can afford only half a road, you build only half a road.

Travel through the hidden underbelly of the city in colorful tunnels filled with art and history exhibits.

An acoustic anomaly with a mysterious cause.

Some 2,000 carvings show this rare desert spring has been an oasis for travelers for over a thousand years.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

In the remote high desert of New Mexico, a strange array of poles beckon fury from above.

A museum dedicated to the alleged Roswell Incident.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Dozens of lights dangle from the branches of what may be the brightest tree in Los Angeles.

This Hollywood dive houses a mural painted by the artists who animated its namesake film.