Double-decker buses offer a 'screenplay' tour of 11 of the city's best-known monuments, all in the space of a couple of hours. Tours start every half hour from 0900 to 2030. The ticket costs €20 for a whole day (reduced price: €15). The stop & go formula means you get on and off at certain points. The buses are uncovered and there is an audio guide in 8 languages giving you information about archaeological sites and monuments on the way. Tickets can be purchased at the office in Piazza del Cinquecento, on board or online with a 10% discount (www.trambusopen.com) by credit card