Lake Albano is a small volcanic crater lake in the Alban Hills of Lazio, at the foot of Monte Cavo, 20 kilometers (12 miles) southeast of Rome. Overlooking it is Castel Gandolfo, where the Pope has a villa.
The lake is the deepest, about 170 meters in Lazio. It is about 3.5 km (2.2 mi) long by 2.3 km (1.4 mi) wide, formed by the overlapping union of two volcanic craters, an origin indicated by the ridge in its center, which rises to a depth of 70 m (230 ft). In 406 BC Plutarch reports that the lake surged over the surrounding hills, despite there being no rain nor tributaries into the lake to explain it (Life of Camillus). The ensuing flood destroyed fields and vineyards, eventually pouring into the sea.
It hosted the canoeing and rowing events of the 1960 Summer Olympic Games that were held at Rome. The lane marking system developed for these events is commonly referred to as the Albano buoy system. It also has hosted open water swims including the 2011 Italian National Open Water Swimming 5K Time Trials.