Three metro lines dissect the city and provide access to most major attractions. Suburban and trolley buses run every 15 minutes. Tickets are 0.80 and must be purchased from a kiosk before boarding the bus. A three-line tram system connects the city center with the southern coastal area of Athens, running 24hrs on weekends. Tickets cost 0.80. The tram, bus and metro system operates daily from 5:30am to midnight. Day passes (3) and week passes (10) allow unlimited use. A ticket for Athens Sightseeing Public Bus Line 400 (5, valid for 24 hours) allows unlimited travel along a 90-minute route that stops at all major attractions, and is scheduled every half-hour from 9am to 6pm.