Portsmouth is a small city located in Seacoast New Hampshire on the border with Maine. Map
I-95 and Route 1 both run through Portsmouth, which is approximately 1 hour north of Boston, MA, and 1 hour south of Portland, ME.
Portsmouth is situated next to the powerful Piscataqua river and is most famous as the (sort of) home of the Portsmouth Naval Shipyard, and most infamous for its terrible parking and high housing costs.