The ruins of the Wolf's Lair (Wilczy Szaniec), are all that remain of Adolf Hitler's WWII headquarters near Ketrzn in the Mazurian region of Poland, now a museum.

The Wolf's Lair consisted of a complex of buildings and a nearby airfield situated on 67 acres of woodland. There are seven massive concrete bunkers measuring in some areas 26 feet high. Although hidden in the woods, Hitler still believed it wasn't enough. As history shows, he was extremely suspicious of anyone around him, and he had right to be. He urged his followers to safeguard the site even more by way of artificial greenery suspended on wires and protected by rings of barbed wire and a minefield.

Read More: Travel to the Wilczy Szaniec"Wolf's Lair" in Poland via TravelSphere

The TravelSphere combines fascinating travel with historical destinations. The site focuses on the more educational side of travel, rather than the exotic hotels or mixed drinks.

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