Cold war icon and onetime "hole" in the iron curtain.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

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

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

Travel through the wholesome amusements of yesteryear at this charming miniature village.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

A little sculpture with a large wardrobe.

Christ's blood preserved in a Belgian town.

Over 12,000 hygiene oriented objects and exhibits.

Tiny communists hammer away on the Olomouc Astronomical Clock.

An ornate plague column – built to celebrate life – claimed the lives of numerous artisans during its construction.

The Habsburgs' royal collections of art and wonders.

The final resting place for the remains of 143 Habsburg royalty.

The beautiful baroque library of the Hapsburg empire.

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.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Sitting beneath an unremarkable residential building is a museum devoted to classic Pinball.

Metro station with a claim to rock n' roll fame.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

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

Berlin's old airport.

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