I had a wonderful adventure early looping around Cape Ann and listening for the clearest fog horn sounds to record. My drive began at the Paint Factory to listen for the Ten Pound Island fog horn, then onto Eastern Point Lighthouse, Thacher Island Light, and Straitsmouth Island Light, before landing at the lighthouse at Annisquam. For my purposes the Annisquam Lighthouse was perfect and I loved the combined sounds of fog horn, birds awakening, waves lapping at the shore, and the clanging of buoy bells in the distance. I think I got some good stuff!
Click the image to hear the Annisquam Lighthouse foghorn.