Varenna, on the eastern shore of Lake Como, is a popular tourist resort boasting fabulous panoramic views of the whole lake. Behind the village, near Vezio, are the ruins of a medieval castle; the donjon and part of the castle walls are still standing. The oldest part of the village still has its medieval layout. There is an ornithological museum housed in the Villa Venini. The Oratorio di S. Giovanni has Romanesque origins with a bell tower has a wall-belfry. The interior of the church has frescoes from the Lombard School, one of which dates back to 1533.