A towering monument to war, located on a beautifully peaceful hill.

A traditional U-Bahn station in Berlin gets a string of rather untraditional benches.

The 1852 novel "Uncle Tom's Cabin" lends its name to a subway station, a street, and several shops on the edge of Berlin.

This conical hill was built as a testing ground for an engineer known as the Glider King.

This museum is home to a sugar sculpture of the Berlin Airlift Memorial.

A unique Holocaust memorial tells the personal stories of the Jewish residents exiled from greater Berlin.

The skeletal frame of a decommissioned gas-pumping station offers breathtaking views of greater Berlin.

A tree-like building perches on its trunk in the Steglitz neighborhood of Berlin.

Berlin's old airport.

Where once there was a train station bathroom, there is now this German burger joint.

A brush maker used his factory to protect blind Jews from the Gestapo.

Blitzkrieg bop your way through Berlin's Ramones Museum.

Named after a militant urban guerilla, this famous former squat is a graffiti-covered stronghold of leftist culture.

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

The bank that helped fund the Mexican-American War and the purchase of Alaska met its downfall after helping Augusto Pinochet launder money.

D.C. once had its own tiny rival to the New York Stock Exchange.

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

Washington's iconic carousel has a nice piece of Civil Rights history.

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

A tiny monument to the unsuccessful attempt by Thomas Jefferson to place the prime meridian in Washington.

The innocent intentions of this monument are somewhat lost in the sculpture's muscled imagery.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.