Mr. History post #6: The bridge that echoes! A National Historic Landmark, this handsome stone bridge, built in 1876 by the Boston Water Works, contains the Sudbury Aqueduct, with a pedestrian walk on top. Visitors standing under the arch can make echoes and view the deep river gorge, waterfall, and steep hemlock-covered banks. Spectacular views atop the bridge! Crazy to think this is basically next to Route 9!
