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

A fascinating insight into daily life in the Eastern Bloc.

A museum dedicated to a Cold War era sausage.

Blitzkrieg bop your way through Berlin's Ramones Museum.

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

An old department store turned Nazi prison turned artist commune.

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.

A beautifully eclectic mix of architectural styles.

This historic Amsterdam bar used to accept sailor's monkeys as payment.

The "Seinfeld" diner.

There must be a pun in this haystack somewhere...

This small New York museum celebrates the mountainous artwork of a Russian mystic.

Possible relics of the ancient Roman city are hidden in this restaurant's façade.

The only home that Alexander Hamilton ever owned has a history almost as troubled as his own.

Salute the leader of the proletariat.

Rummage through this sunken ship, but leave your scuba gear at home.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

A discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

The former hotel where Tesla invented the radio.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

Avoid gangster interaction while window-shopping.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.