Oldest surviving example of a Dutch saltbox frame house in America.

Where the four original members of the Ramones hung out and revolutionized punk rock.

Of course the grave of JFK's assassin is surrounded by conspiracy theories.

The world's second-longest burning light bulb.

A stairway to heaven, or to nowhere at all.

Pop culture has helped to keep this iconic British building from being destroyed.

The London pub overlooks where the Mayflower was moored before setting sail for the New World.

The first tunnel to be dug beneath a river, repurposed as an art and museum space.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

The lab where the scientist made his groundbreaking discoveries is preserved on the basement floor of the Faraday Museum.

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

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

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

Berlin's beloved bear is immortalized at the Museum für Naturkunde.

An abandoned swimming pool decays on the outskirts of Berlin.

From Iggy Pop to David Bowie to Nick Cave, this regal music studio has served some of the all time greats.

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

Berlin's old airport.

Blitzkrieg bop your way through Berlin's Ramones Museum.

Someone loved this song enough to carve all of its lyrics onto a tree trunk in a Berlin park.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

Executed in 1401, Exhumed in 1878, Stolen in 2010.