The oldest surviving botanic garden in the United States.

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

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

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

This water-tower-turned-high-end-apartment building was once the site of an early Nazi concentration camp.

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

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

A fascinating insight into daily life in the Eastern Bloc.

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

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

The most visited, and possibly most controversial, museum in Germany.

This luxury shopping lane has been protected by its own tiny police force for over a century.

Drink your espresso at a Victorian-era urinal in this underground-restroom-turned-coffee-bar.

The next-door homes of two very different musicians, George Frideric Handel and Jimi Hendrix.

London's old-school healing garden.

This once-controversial and slightly confusing statue of Achilles was built out of captured cannons.

A unique tribute to the millions of animals who served and died for the British military.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

This innovative steam machine was no doubt the most famous of the pioneer locomotives.

Eighty million natural history specimens call this gargantuan museum home.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

This artist's home turned gallery/museum preserves the creator's love of "Eastern" influences.

This beautiful deer park was built so King Charles I and his court could go hunting while escaping a deadly plague outbreak.