Join the Edward Gorey House, the Bangs Hallet House Museum, the Winslow Crocker House, and the New Church for a day of free admission and a neighborhood-wide scavenger hunt. Sally Zimmerman of Historic New England will give a free talk on “Visionary Women” at 4 in the New Church sponsored by the Historical Society of Old Yarmouth. No reservations required to visit the House — just a sense of foreboding.