The Ostrów Gate Tower (Polish: Baszta Bramy Ostrowskiej) is one of the most important historic sites in Gubin. Built in the 14th or 15th Century, until the 19th Century the tower was an element of the Ostrów Gate leading towards Żary. It is occasionally opened for tourists. The tower is 23 m high and is crowned with a metal sheet tent and a ridge turret. Below the tent, there is a clock. Today, the tower is one of the most characteristic structures of the old town in Gubin.