In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

A collection of old neon signs from all over Poland line a secluded courtyard.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

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

Eighty million natural history specimens call this gargantuan museum home.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

Memorials at a Florence railway station remember the citizens who were deported from Italy and sent to extermination camps.

Many famous English poets including Elizabeth Barrett Browning are laid to rest at this Swiss-owned cemetery in Florence.

Centuries ago, red and white wine poured from the statue's breasts whenever a new Venetian ruler was elected.

Two stone columns flank the grand Venice square, but there were supposed to be three.

This dockworkers' lunch joint has been left leaning by a century of storm floods.

This wooden hotel is a temple to German sustainability and forest conservation.

Hamburg's first legal sex work is relegated to a gated street that still does not allow pedestrian women.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

This contentious squat has stood through fire, violence, and government intervention as a hotbed of leftist protest.

Hamburgers are intensely proud of their tunnel beneath the river.

Remnants of an exploded schooner and wrecked submarines form a breakwater.

Model Trains and Much More in Hamburg.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

You've probably seen these distinctive orange-tiled columns on the big screen.

This monumental work of art symbolizes the coming together of a previously divided city.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

Reminders of the Battle of Berlin still scar the railway.

Cold war icon and onetime "hole" in the iron curtain.