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.

Germany's Glienicke Bridge has a shady history of clandestine meetings, espionage, and spycraft.

A quaint Russian village in the middle of a German metropolis.

Before he was forced to flee the country under Nazi rule, Albert Einstein spent his summers in this custom-built lakeside house near Berlin.

Scotland still bears an enormous scar of its Roman past.

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

Legend says a witch conjured the world's third largest whirlpool to protect Scotland from a nasty pirate.

A bloody history is captured in this former prison turned museum.

Qshla Koya is an Ottoman fortress located on a hillock in the central quarter of Koya.

This ancient stone bridge is a hub for daredevils.

An ancient sanctuary that has long been a holy site for the Chaldean Christian Church.

The sacred shrine of the Yazidis.

The legendary fortress of a female Kurdish warrior leader.

The controversial final resting place of the equally controversial first president of Turkmenistan.

If you want to get married in the White Marble City of Ashgabat, you should do it in this surreal disco ball building.

Sumptous memorial to a controversial independence.

A huge monument to a bizarre book written by Turkmenistan’s longstanding dictator.

This "tower of death" has acted as an observatory, a religious hub, and an executioner's lair.

Controversially restored in the 1970s, this giant 15th-century mosque is shrouded in legend.

The Avenue of Mausolea is a series of grand palatial tombs.

An 18-meter-long sarcophagus of a constantly growing dead prophet.

Light still pours into the ruins of this ancient Islamic observatory.

The foundation of this ancient stupa dates back to the 1st-century.