The Adalberto Tower is one of the oldest medieval towers in Bergamo, and is located near the Visconti Castle. The tower was named after one of the sons of the noble families, Bishop Adalbert, who owned the tower at the time. A set of wooden steps that give access to the top of the tower, but it no longer exists today, the tower gains its historical importance as the only remaining tower of the eleven towers that were part of the Visconti Castle.