Ruins in Poland

These beautiful castle ruins are nestled in the Polish countryside.

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

This formerly-prosperous Silesian mining town was completely demolished in the late 1960s and early 1970s as an attempt to cover up a secret Soviet uranium mine.

In northeastern Poland, the ruins of a massive granary overlook the Narew River.

At first glance, this area seems like just another city park, but the lush landscape hides a dark past.

A mysterious structure left behind on the Polish mountainside, sometimes called "Hitler's Stonehenge".

One of the largest amphitheaters in Europe is a former Nazi German gathering place that still stands today.

This mysterious and once-grand memorial still embodies a remarkable architectural vision.

The shattered remains of the world's once tallest structure.