This artificial cave looks like something out of a fairytale.

A series of markers along one side of an Amsterdam canal memorialize the Jewish residents from the other side who died in the Holocaust.

The first museum in the world devoted to sexual gadgetry.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

A grumpy old water goblin guarding an old mill on the Devil’s Stream in Prague.

This moving sculpture depicts contortionist positions based on photographs of gymnast Věra Čáslavská, who protested the Soviet invasion of Czechoslovakia.

A traditional Nepalese window blends into the historic merchant district of Old Nara Town.

An enormous hand-carved and painted pole.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

The skeleton of a 19th-century elephant that was executed by cannonball.

This simple apartment may have inspired some of the most important theories in the history of science.

A futuristic rocket marks the spot where three borders meet.

The most impressive of Basel's three remaining city gates.

This ferry carries passengers across the Rhine propelled by no engine or paddles but by the river's current.

This 42-foot tribute to the workforce still reminds us to pause and recharge.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

This small beach park is littered with a collection of unique driftwood sculptures.

A monument stands at one of the starting lines of the Trans-Canada Highway, formerly the longest uninterrupted highway in the world.

The large fjord lake is thought to be the home of "Ogopogo," a giant sea serpent.

This symbol of the town's Swiss heritage is a tribute to the Zytglogge in Bern.

This glass wall is gradually filling up with paper cranes, in honor of Hiroshima’s past and dedication to its future.

Try maple leaf tempura at the trailside shop that brought it back from oblivion.

Lombard Street may be more famous, but this is the real “crookedest street in the world.”

A raised Japanese building has preserved 8th-century artifacts for more than a millennium, earning this log cabin a reputation as the "world's oldest museum."