Potsdam is a city in eastern Germany of approximately 150,000 people. After the German reunification, Potsdam became the capital of the newly re-established state of Brandenburg. It is situated on the Havel River and is southwest of Berlin. Potsdam is thought to have been founded in the 10th century as a Slavic village called "Poztupimi". It became the hunting residence of Frederick William I, elector of Brandenburg in 1650.

Potsdam, Germany paired with Sioux Falls in 1990. This is the oldest such partnership between a U.S. municipality and a city in the New Laender—the former states of East Germany.

Today, over 900 U.S. cities have twinned with more than 1,300 cities in 92 countries worldwide. Potsdam, Germany paired with Sioux Falls in 1990. This is the oldest such partnership between a U.S. municipality and a city in the New Laender—the former states of East Germany.

Potsdam, Germany directly boarders the capital of Berlin. Potsdam is also the city of the German Federal State of Brandenburg.