Minute Man Visitor Center is at 250 N. Great Rd., .3 mi. e. of jct. Mill St., in Minute Man National Historical Park; some electronic mapping programs may require using 3151 Marrett Rd. in Lexington. The site serves as a starting point for most visitors. A 25-minute multimedia presentation offers an introduction to the events at Lexington and Concord in 1775. Maps are available for self-guiding tours of the park.