The Delaware Breakwater Light is located along the Lewes Harbor, close to the Delaware Bay entrance. The station was first established in 1885 and became deactivated in 1996. The construction materials included brick with cast iron plates which now stands 60.5 feet above high tide. In 2004, the Delaware River and Bay Authority and the Delaware River and Bay Lighthouse Foundation together began restoration efforts and public tours.
The Fenwick Island Light, first established in 1859, is located in Delaware along the Maryland border in the vicinity of the Fishing Harbor. The lighthouse was constructed mainly of brick at a total cost of $23,748.96. The tower stands 83 feet above water. The lighthouse is currently operational and a 25,000 candlepower light, seen 15 miles out to sea, flashes every three seconds. Visitors are able to enter the location free of charge.
The Fourteen Foot Bank Light is located in Delaware Bay along Bowers Beach. The lighthouse was first established in 1856 but was not lit until 1887. Up until 1886, the location was first marked by a lightship, which has been transferred to the Ram Island Reef, Connecticut. The lens from the lighthouse is currently on loan and on display in the Lewes Historical Society's Cannonball and Marine Museum.
The Harbor of Refuge Breakwater Light, completed in 1908, is located in the Lewes Harbor at the Delaware Bay entrance. The original purpose of the light was to provide a harbor that was safe for ships during stormy weather. A second part of the structure was then built to accommodate larger ships. Many parts to the light were reconstructed and added due to damage caused by frequent storms or passing ships. Access to the structure is provided to the public through a dock that continually needs to be rebuilt due to damage from storms.
World War II observation towers have long been a part of the Delaware coast lines. Tall concrete observation silos, seen along the beaches, were used during World War II as lookout towers and as a location for the military to keep their guns in the lower bunkers. Guided tours of the towers and bunkers are offered to the public.