Boston's transport network consists of the country's oldest subway system, buses, trams, ferries around the harbour, and the commuter rail. For getting around the Boston-Cambridge area, the subway is the best as it's easy to use, fast, and safe.
It serves most of the city and on the whole visitors will have little use for the bus network, which is cheaper but more confusing for newcomers. Buses operate from 5am to 11.30pm and the subway until around 1am. A 'Night Owl' bus service has been introduced to provide transport along main bus routes and parallel to subway lines on Friday and Saturday nights until 2.30am.
Taxis are plentiful but expensive, with water taxis a novel way to explore the city. Licensed metre cabs park at cabstands, usually near hotels, but can also be reserved by phone. Boston is a motorist's nightmare and there's no need to rent a car while in the city, unless planning excursions.