What is "rossgarten"

thumb|Rossgarten's marketplace, the Roßgärter Markt

Rossgarten was a quarter of northeastern Königsberg, Germany. It was also occasionally known as Altrossgarten (Altroßgarten) to differentiate it from Neurossgarten in northwestern Königsberg. Its territory is now part of the Leningradsky District of Kaliningrad, Russia.