The maritime portion of Venice has no streets as such, being composed almost entirely of narrow footpaths, and laid out across islands connected by staired stone footbridges, making transportation impossible by almost anything with wheels. Cars can reach the car/bus terminal via the Ponte della Liberta bridge. It comes in from the West from Mestre. There are two parking lots which serve the city: Tronchetto and Piazzale Roma. Cars can be parked there anytime for around ?30 per day. A ferry to Lido leaves from the parking lot in Tronchetto and it is served by vaporetti and buses of the public transportation.