The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

Perhaps the most scandalous statue of America's first president.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

Elevated freight railway turned wildly successful urban park.

A bit of retro transportation flair preserved in the world's largest department store.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

Swarovski's museum/theme park is a fake diamond fantasia overlooked by a giant.

When a medieval fire claimed the original St. Stephen’s Cathedral, it sparked a pattern of unquenchable organ building.

Shimmering sea-colored mosaics and Jesus statues cover this opulent building.

The telescope that discovered Neptune.

Go surfing on this urban wave, "hacked" by local surfers.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The footprint of a frustrated devil in Munich's Cathedral.

One of the most easily accessible examples of the rare 1960s UFO houses.

The prototype for all Nazi concentration camps.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

An industrial relic is now one of Europe's most staggering art spaces.

Model Trains and Much More in Hamburg.

This red light district plaza memorializes the Fab Four and their historic connection to the area.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The walls of Germany's Parliament still show the scars of the Red Army takeover in World War II.

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