A city's controversial tribute to its founder depicts townspeople flashing their bare behinds.

Twisted trees shaped by coastal winds make this woodland look like something from a spooky story.

This former Soviet military base has over 10 original aircraft and an enormous amount of memorabilia on display.

The largest and best-preserved rotunda in Prague.

A small hippo-shaped fountain in Berlin, Germany.

The first statue to be added to Saint Peter's Square in over 350 years is an ode to migrants and refugees around the world.

A historic and beautiful Art Nouveau chamber in a historic railway station.

Step aboard the first ship to circumnavigate North America.

The world's largest bicycle shelter can hold more than 12,500 two-wheelers.

The cutest way to stay safe in traffic.

This abandoned hospital has a long history, having housed both German and Soviet soldiers in the course of its life.

An astonishingly accurate water clock that doubles as an hourly spectacle in this Berlin shopping area.

One of the three perfect vellum copies of this historic book known to exist is on display in a specially-designed case.

This abandoned but well-preserved Prussian fortress sits abandoned in a Polish forest near the German border.

A purr-fectly spirited bronze celebration of local street felines through history.

An unfinished Serbian Orthodox church with 1,389 golden crosses planned to represent the Battle of Kosovo.

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

This stone in Lake Geneva was once the reference point used to determine altitude in Switzerland.

A phantasmagoric tomb honors a Belgian artist-scientist's contributions to the world of spooky entertainment.

These abundant, over-the-top monuments are so widely scattered that they define the entire compact capital cityscape, often leading to jokes about whether there are more statues than residents.

A tiny chapel and burial site lurk underground in Jajce.

A pink sandstone column once used in ancient times to measure one's belly after a night of debauchery.

Liechtenstein's royal family calls this medieval alpine castle home.

A statue built to honor the elite soldiers who fought for Latvia during World War I.