The Castelvecchio (Old Castle) is an imposing military structure from the 14th-century, commissioned by the powerful Della Scala (commonly known as Scaligeri).

With little decoration and composed of bricks of a soft red, it stands along the Adige River on the west side of the historic center.

The structure is very well kept and contains an intricate design, as each section is different from one another. The central courtyard is elegant and pleasant. The views from the castle highlight the city and river. There are permanent and temporary exhibits at all times at the castle.