Some of the most impressive ruins I have seen in Italy--including Rome! The site is situated at the tip of a penninsula, with natural, hot sulpher springs on the east side. All around the ruins are olive trees, lemon trees, and small wildlife.
The ruins themselves are quite impressive. The "somewhat open-air" museum does an extraordinary job explaining artifacts and daily life in this old "Roman Villa." There is even a small exhibit on the Geology of the Lake, and the sulpher springs next door!
There is a self-guided tour that is included in the small entry price (5-10 euros per person). If you like ruins, and are into History, be certain to stop by if you are near. These are among some of the most impressive ruins (and museum) in Italy!
From journal Sirmione & Lake Garda, Italy