Check the time in 145 countries at once with this East German relic.

Berlin's old airport.

After a nearly successful attempt on Hitler's life, the conspirators met their fate in the courtyard of this Berlin building.

The site where a plot to assassinate Hitler was planned—and its conspirators were executed—is now a powerful memorial to the German resistance during World War II.

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

A poignant memorial that traces two hundred years of German history.

The pockmarks across the building's facade are remnants of the Blitz.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

At the center of London’s oldest roundabout stands an obelisk that was erected in 1771, but spent several decades elsewhere.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

A hands-off space for graffiti artists to hone and display their skills.