MBTA subway
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The Massachusetts Bay Transportation Authority operates rapid transit, light rail, and bus rapid transit services in the Boston metropolitan area, collectively referred to as the rapid transit, subway
Red Line train entering Charles/MGH station in February 2025
Tremont Street subway
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The Tremont Street subway in Boston's MBTA subway system is the oldest subway tunnel in North America and the third-oldest still in use worldwide to exclusively use electric traction, opening on Septe
A flying junction on the now-abandoned southern branch of the Tremont Street subway, south of Boylston station, approaching the Pleasant Street incline (1898 photo)
Part of the original northbound tunnel (bottom right) exposed during City Hall construction