Asso (Valassinese ) is an Italian comune in the province of Como, in Lombardy, Italy. It has 3,524 citizens and an area of , with a density of 546 people per square kilometer (1,400 per sq mi). Main sights Significant historic buildings are: the castle, built in the 12th century; nowadays only the tower is in good condition; the main church of John the Baptist, built between 1641 and 1675; a few bridges on the river Lambro, including punt de la Fola, punt di Gubitt and ponte Oscuro. Sister towns Saint-Péray, France, since 2001 References External links Cities and towns in Lombardy Castles in Italy