The Guinness Book acknowledged one of the biggest and oldest collections of computer games, featuring a strange 'pain machine' that blurs the boundaries between the digital and the real world

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

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

An early 20th-century bullring converted into a modern shopping center.

Soaring over the Niagara Whirlpool since 1916.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

A stunning little chapel built on a rock in the Mediterranean Sea on the Greek island of Leros.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

Louise Bourgeois' 30-foot-tall steel spider sculpture.

A crumbling bakery where forced laborers from the nearby concentration camp toiled to feed their fellow prisoners and Nazi soldiers.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

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

Volkswagen's dedicated museum dives into the complex history of one of the world's best known cars.

Explore the complex ecology of this multifaceted nature preserve by riverboat.

One of the largest vehicles ever built is now open to the public.

Terrifying derelict military hospital once housed a recuperating Hitler.

A steam powered train that runs on city streets.

A taxidermied stork with an arrow through its neck proved that birds migrate.

This 1960's Soviet submarine in Peenemünde Harbor claims to be the largest submarine museum in the world.

An elevator into the Baltic Sea.

The NASA scientists behind Apollo 11 started out developing Nazi weapons at this abandoned German rocket factory.

This giant, 83-year-old ship elevator is an engineering feat to behold.