Falmouth is located just across the Portland border along the coast. You can cross the Martin's Point Bridge, which joins Falmouth and Portland, and then follow Andrews Avenue to Mackworth Island to hike a one-mile loop with views of sandy beaches, rocky shores and Casco Bay. Back on the mainland you can visit the Gilsland Farm Center, headquarters for the Maine Audubon Society. The center offers two miles of trails along the Presumpscot River estuary through the hills, forests and salt marsh of Falmouth. You can also venture north along Route 88 to see the coastline and the stately homes in Falmouth Foreside.