In 1948 the Soviet Union occupied East Berlin as well as the East German territory surrounding the city, so the Allied controlled West Berlin was completely landlocked by Soviet control. When the Soviets blocked all rail, road and waterway traffic…

Just off the east coast off Spain lies this collection of holes in the Mediterranean. They're used to drain the Atlantic, which allows for regular cleaning of the sea-bed. Honestly. OK, so I have absolutely no idea what they are.…

Sandwiched between Kazakhstan to the north and Uzbekistan to the south, this is the dying Aral Sea. Wikipedia says: Since the 1960s the Aral Sea has been shrinking, as the rivers that feed it (the Amu Darya and the Syr…