Costumed guides give 90-minute walking tours of the Freedom Trail, which includes more than 20 historic sites such as Paul Revere's house, the site of the Boston Massacre and the USS Constitution. The trail is marked on sidewalks and street crossings with a double row of red bricks or a painted red line. Bronze pavement markers indicate each of the sites. If you want to go it alone, audio tours, easy-to-follow maps and guidebooks are available at the Boston Common Visitors Information Booth and the Boston National Historic Park Visitors Center. Phone for information. Tours take place daily 11 am, noon, 1 and 3:30 pm from the Visitors Information Booth, and at 10:30 and 11:30 am from the Bostix booth in Faneuil Hall. US$12 adults, US$6 children, US$10 seniors and students. Phone 617-357-8300. http://www.thefreedomtrail.org.
