Replicas of Apollo's leonine stone guard cats still line a sacred row in Greece.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

Giant marble phalluses on the sacred island of antiquity.

A Bronze age settlement on the Greek island of Santorini might have been the inspiration for Plato's Atlantis.

An ancient octagonal weather station named for the eight Greek gods of wind.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

The hallucinogenic center of the ancient world.

Monasteries on rock pillars, once accessible only by frayed ropes.

One of Australia's largest secondhand bookstores.

This expansive bridge in the Canadian wilderness was originally just built for friends.

Housing a morgue, rare and confiscated weapons, and autopsy remains, the Vancouver police museum displays the dark side of Canada.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

The 18th-century home was disassembled into 253 cases and brought all the way from the other side of the world.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

How did a lighthouse wind up in the middle of this landlocked German city?

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

Berlin's old airport.

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

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

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

Go surfing on this urban wave, "hacked" by local surfers.

Daily jousts and dancing barrel makers in Munich's mechanical clock.