The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

Recorded as the first person buried in Arlington Cemetery.

A gift from Scotland to the United States in memory of the 270 lives lost when Pan Am Flight 103 exploded over Lockerbie due to a terrorist bombing.

This monument traces the segregation line that inspired the first rural branch of the NAACP.

Catch a scenic view of Warsaw's Old Town from the top of a centuries-old dumping ground.

An oft-overlooked, magically musical monolith that stands majestically between Arlington Cemetery and the Iwo Jima Memorial.

The location where the iconic movie character declared it was time to go home.

Once home to some 250,000 volumes and priceless art artifacts, this Polish estate was a target of bombing during World War II.

This watchtower once presided over the Berlin Wall.

Though it was originally dedicated to the Hindu god Shiva, Baphuon was converted to a Buddhist temple in the 15th century, complete with a massive hidden statue.

Warsaw's fantastically preserved gasworks...almost.

A heavily politicized roundabout discussing the state of a heavily politicized country.

This stunning iron gate designed by Modernist architect Antoni Gaudí is filled with mythic symbolism.

These plaques found across Warsaw commemorate the sites where executions or battles took place during the German occupation.

Modern art commemorates one of the first military actions of World War II.

This pedestrian walkway cuts through a cemetery and over several burial vaults.

This eye-catching sculpture of rural life seems a bit out of place at a suburban intersection in front of a car dealership.

In what is rumored to be an intentional act of spite, this memorial almost completely obscures the nearby grave of a senior officer.

One of Gettysburg’s least visited battlefield memorials is off the beaten path, but worth a visit.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

A fascinating insight into daily life in the Eastern Bloc.

The controversial urban planner who designed Washington, D.C., was buried in Maryland, and can presently be found in Virginia.

Hundreds of notes give thanks to the patron saint of lost causes.

This enormous 32-foot painting depicts Poland's greatest medieval battle in glorious detail.