Europe is also suffering through a historic drought, with experts estimating this week that it's the continent's worst in 500 years.

The Danube, the continent's second-longest river, has dropped to one of its lowest levels in decades — exposing dozens of German warships that were sunk during World War II and are still laden with explosives.

More than 20 of these hulks have been found near Prahovo, a town in Serbia, according to Reuters. They were a part of Nazi Germany's Black Sea Fleet that was scuttled by the Soviet army in 1944.

           GHOST VILLEGE IN SPAIN

     In Spain's northwestern Galicia region, a forgotten village has emerged from the Limia river due to the drought sending water levels in a nearby reservoir to historic lows.

Another drought-hit dam has led to the emergence of a site sometimes known as the "Spanish Stonehenge."

Discovered by German archaeologist Hugo Obermaier in 1926, the Dolmen of Guadalperal is believed to date back to 5000 B.C. Sitting in the Valdecanas reservoir in the central Cáceres province, the circle of dozens of large prehistoric stones is now fully exposed for only the fourth recorded time, according to Reuters.

The reservoir was first flooded in 1963 in a rural development project, but authorities report that its water levels have dropped to just 28% of capacity. According to a study published by the journal Nature Geoscience, the entire Iberian Peninsula is at its driest level in 1,200 years.