Four O'Clock Factoid is a new daily feature on Track Twenty-Nine helping to get you through the workday with a bit of useless knowledge.
Boston's Tremont Street Subway is the oldest in the Western Hemisphere. Opened September 1, 1897, it's been carrying trains ever since. The two oldest underground transit stations in the United States are located along this stretch - Boylston and Park Street. Today, the tunnels carry Boston's Green Line. This subway is not a heavy rail subway, but is rather a light rail/streetcar subway. It predates underground operation in New York by 7 years.