From east to west, Boston's Boylston Street begins at the intersection of Essex Street and Washington Street in Boston's Chinatown neighborhood at the edge of Downtown Boston. It is a one-way street running west-to-east from Tremont Street to Washington Street. West of Tremont Street, it runs along the southern edge of the Boston Common and the Boston Public Garden. West of Arlington Street, it is a one-way street running eastbound, forming a major traffic artery and commercial street through the Back Bay neighborhood, where it passes along the north side of Copley Square. West of the Back Bay neighborhood, the street intersects with the Fenway to form the northern boundary of the Back Bay Fens. Here it intersects with the Charlesgate viaduct, connecting to Storrow Drive. West of this intersection, the street carries traffic in both directions as a two-way, six-lane street through Boston's Fenway neighborhood. It runs through high-rise, mixed-use buildings one block south of Fenway Park before ending at the intersection of Park Drive, Brookline Avenue, and the Riverway.