Zug Castle, Medieval fortress in Zug, Switzerland.

Zug Castle is a castle in the newer old town of Zug, within the second city wall. Its core is a 9 by 9 m stone tower with 2 m thick first-story walls, rising 16 m, with upper walls about 1.5 m thick. A half-timbered structure built around 1555 stands on the tower's west side.

The site began around 1000 as a wooden manor on an island between two streams, held by a ministerialis family. In the 13th century the Kyburgs, founders of Zug, rebuilt it in stone with a 9 by 9 m tower whose first-story walls are 2 m thick. After the Kyburg line died out in 1264 the Habsburgs inherited castle and town; in 1555 Johannes Zurlauben added the half-timbered structure on the west side of the tower.

The castle serves as a museum where you can see objects from different periods that show how people lived in this region. The exhibitions provide insight into daily life and how the town developed over centuries.

The castle is located in the old town and is easy to reach, with staircases and multiple levels inside to explore. Information panels in several languages help you navigate and learn more about the exhibitions as you visit.

Inside the castle is a collection of books that came from a former Capuchin Monastery in the town. These books are hundreds of years old and tell the story of the region's religious and educational past.