You would never guess that before World War II this lonely field was a bustling German city.

A small granite monument marks where the borders of three countries meet.

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

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.

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.

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

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

Memorial to the lost dead of Gdansk, whose resting places were destroyed during World War II.

These rare statues are one of the few remaining material witnesses to Old Prussian culture.

A mysterious emblem tucked in an small alleyway is actually the coat of arms of a heroic medieval family.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

This 700-year-old structure is one of the most unique architectural and historic monuments in Gdańsk.

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.

This antique thermometer honors the creator of the first universal temperature scale.

A World War II torpedo launch station abandoned off the Polish coast.

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

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

Berliners converted a bombed-out, disused lot into a community-run urban farm with its own cafe and bar.

This decommissioned nuclear power plant offers tours of its Communist-era control room and reactor hall.

This picturesque monastery at the base of a cliff is a peaceful oasis open to all visitors.

This 1960's Soviet submarine in Peenemünde Harbor claims to be the largest submarine museum in the world.

These tiny cabins on a cableway have been carrying visitors at a Baltic resort down to the beach since 1912.