Steinstücken, with approximately 300 residents, is a small outlying neighborhood of the Wannsee district in the Berlin borough of Steglitz-Zehlendorf. From the division of Germany in 1949 until a connecting corridor was created in 1971–72, Steinstücken was the only permanently inhabited of twelve original exclaves of West Berlin in East Germany, while West Berlin itself was an enclave controlled by the Western Allies, surrounded by East German (GDR) territory.