Chioggia is a coastal town and comune of the Metropolitan City of Venice in the Veneto region of northern Italy. Chioggia is a miniature version of Venice, and is often called "Little Venice", with a few canals, chief among them the Canale Vena, and the characteristic narrow streets known as calli. Chioggia has several medieval churches, much reworked in the period of its greatest prosperity in the 16th and 17th centuries. The church dedicated to St. Mary of the Assumption, founded in the eleventh century, became a cathedral in 1110, then was rebuilt as Chioggia Cathedral from 1623 by Baldassarre Longhena. The church of St. Andrew (18th century) has a bell tower from the 11th-12th centuries, the most ancient tower watch in the world. The interior has a Crucifixion by Palma the Elder.