Some 35 miles south of Boston, the Tweeter is Massachusetts' largest outdoor amphitheater, with a maximum capacity of 19,000. It offers an all-American arena concert experience, featuring massively popular country, pop and rock acts - not to mention car park tailgating parties, in which concertgoers can cook up barbecues and sink a few beers before the show. Lawn seats at the back of the venue, way up in the gods, offer a cheaper and more mellow experience - but you'll need to take your binoculars.