Prior to modern plumbing, some toilets were in tall towers perched over rivers.

For centuries, this hill along the Polish coast has been used as a lookout—and the rumored home of pirate treasure.

This statue is said to bring good luck to visiting lovebirds.

This bombed church was given a new life as a contemporary art gallery.

At nearly four meters tall, this giant potato looms over a small Polish town.

A striking church with a Tolkien-inspired nickname.

A relic of Poland's shipbuilding past, reborn as a sky-high lookout.

This Baltic beauty is rumored to grant a wish and a half.

A miniatures park with a model of Wolf's Lair as it looked during World War II.

A stone in Wolin, Poland, marks the possible location of a legendary Viking fortress.

This hilltop ruin is of the hundreds of stone columns built in tribute to the first German chancellor.

Built to transport German U-boats through the never-completed Masurian Canal, the locks near this Polish village are now home to a rope course.

The two abandoned overpasses are among the largest bridges in Poland.

This Communist-era residential block is one of the longest residential building in Europe.

This open-air museum was originally a World War II testing ground for German missiles and rockets.

Boats must transform into railroad cars to navigate this Polish canal.

A floundering Polish shipyard was once the soul of the Solidarity movement that capsized communism.

The silly symbol for an underground protest group is now scattered around the city.

A striking public sculpture representing the period of martial law in Communist Poland.

This 13th century Gothic brick castle is the largest in the world by surface area.

This imposing 20th-century castle was abandoned before it was ever completed.

These massive moving sand dunes have swallowed an entire village and are still on the run.

A peculiar family mausoleum built by a German nobleman captivated by the occult.

This Nazi ruin was the site where Hitler was almost blown up by a suitcase bomb.