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

These 18th-century paintings of Warsaw were used to reconstruct the city after World War II.

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

A striking church with a Tolkien-inspired nickname.

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

This wooden mosque is one of the few remnants of medieval Poland's Muslim Tatar community in this deeply Catholic country.

Several 12th-century ruins can be found inside this historical market.

The rusting hulk of a Soviet warship sits on a Polish beach.

This dazzling wooden church was constructed as part of an elaborate peace project after the Thirty Years' War.

This lakeside bunker complex in Mamerki, Poland, housed the Supreme Military Command of Nazi Germany during World War II.

The relics are stored in a silver reliquary, where they can be seen through glass.

An artificial date palm stands as a memorial to Warsaw's Jewish community.

This ex-prison dates back to the Middle Ages.

An extensive network of secret tunnels was created for the Nazi project "Riese."

The majority of the highest mountain in Poland is actually located in a different country.

This museum in the tower of the oldest church in Gdańsk, is home to centuries-old time-keeping devices and the world's first pulsar clock.

People in Poland have rallied to save this unnatural desert from being reclaimed by the forest.

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

This towering statue of Jesus provided internet to the surrounding area.

One of the world's largest amber altarpieces is housed within this reconstructed medieval church.

Relive a Polish uprising via an enormous, century-old cyclorama.

On this Polish road, an optical illusion makes cars seem to roll uphill.

The coffin-shaped church was once home to monks who slept in coffins.

Come to this Polish museum to take a good, clean look at filth.