Wolf Trap Light . In 1894, Wolf Trap Light replaced a hexagonal screwpile structure built in 1870 that was destroyed by ice. This one, on a caisson foundation, can be seen by boat or from the Mathews County shore, northeast of Horn Harbor. Smith Point Light . This lighthouse at the mouth of the Potomac River is a destination of fishermen heading out from Reedville and Smith Point.
Many fish are thigmotropic and like to hang around artificial or natural structures.
On Point Lookout at the southern tip of St. Mary s County is this 1830 house with a lantern on top. Piney Point Lighthouse . The Piney Point Lighthouse is one of just four lighthouses still in existence on the Potomac River. Point No Point . This two-story, octagonal, brick lighthouse is 52 feet high.