Boston - Charles River

The Charles River is a natural boundary between Cambridge and Boston.

Where the river flows into Boston Harbor, it is spanned by several major bridges including the new Interstate 93 one supported by two inverted Y-shaped towers supporting a fan-shaped series of cables. These towers mimic the shape of the Bunker Hill monument.

Further up river toward Cambridge, the Charles's banks are natural boasting biking/jogging trails with views of islands and rowers in racing sculls.