Lake Trasimeno is in the Perugia province in Umbria. The lake offers so much for tourists, locals, and everyone else who cares about what nature has to offer. There so many fascinating things about Lake Trasimeno including great restaurants, war history, and relaxation spots that make it a home away from home. When riding down the lake, it is common to see deteriorating old castles covered up by thick forests. Some of these castles have been there for centuries, and that is what makes them even more fascinating. Click the next ARROW to see the next photo!