Venice, capital of the Veneto region in northern Italy, occupies more than 100 small islands in a lagoon of the Adriatic Sea. The city does not include any roads, only canals, including the Grand Canal, bordered by Gothic and Renaissance palaces. In the center, St. Mark's Square is home to St. Mark's Basilica, covered with Byzantine mosaics, and St. Mark's Bell Tower, overlooking the red roofs of Venice.