Venice is in Italy.
The Padua-Treviso-Venice Metropolitan Area ( PATREVE ) or Venice City-Region is the urban agglomeration centred on the cities of Padova , Treviso and Venice in the Veneto region of north-east Italy . Republic of Venice . Serenissima Repubblica di Venezia ) , was a sovereign state and maritime republic in northeastern Italy , which existed for a millennium between the 8th century and the 18th century . The Venetian Lagoon ( Laguna di Venezia Łaguna de Venesia ) is an enclosed bay of the Adriatic Sea , in northern Italy , in which the city of Venice is situated . Venice . The Republic of Venice was a major financial and maritime power during the Middle Ages and Renaissance , and a staging area for the Crusades and the Battle of Lepanto , as well as a very important center of commerce ( especially silk , grain , and spice ) and art in the 13th century up to the end of the 17th century .