Venice (Italian – Venezia) is a city in northeastern Italy sited on a group of 117 small islands separated by canals and linked by bridges. It is located in the marshy Venetian Lagoon which stretches along the shoreline, between the mouths of the Po and the Piave Rivers. Parts of Venice are renowned for the beauty of their settings, their architecture, and artwork. A part of the city is listed as a World Heritage Site, along with its lagoon. The gondola is a traditional, flat-bottomed Venetian rowing boat, well suited to the conditions of the Venetian lagoon. The rowing oar, which is not fastened to the hull, is used in a sculling manner, also acting as the rudder. For centuries the gondola was the chief means of transportation and most common watercraft within Venice. It is propelled by a gondolier. In modern times the iconic boats still have a role in public transport in the city, serving as traghetti (ferries) over the Grand Canal. Their primary role today, however, is to carry tourists.