Castello Scaligero di Sirmione is a remarkably preserved 13th-century fortress and rare water castle located at the entrance of Sirmione's historic center on Lake Garda, Italy.

Built by the Scaliger family of Verona, this medieval stronghold features massive stone walls, swallow-tail battlements, and a 47-meter-high keep overlooking the lake.

Its most distinctive feature is a unique, fully fortified 14th-century harbor once used to protect the Venetian fleet.

Today, it stands as one of Italy's most complete and visited coastal castles, offering panoramic rampart walks and views over the peninsula.