A lighthouse is a tower, building, or other type of physical structure designed to emit light from a system of lamps and lenses and to serve as a beacon for navigational aid, for maritime pilots at sea or on inland waterways.
The Seven Foot Knoll Light was built in 1855 and is the oldest screw-pile lighthouse in Maryland. It was located atop Seven Foot Knoll in the Chesapeake Bay until it was replaced by a modern navigational aid and relocated to Baltimore's Inner Harbor as a museum exhibit.
The Toledo Harbor Lighthouse is a lighthouse in Lake Erie near Toledo, Ohio, in the United States. The light replaced the 1837 lighthouse on Turtle Island at the mouth of the Maumee River. It is an active aid to navigation.
Fowey Rocks Light is located seven miles southeast of Cape Florida on Key Biscayne. The lighthouse was completed in 1878, replacing the Cape Florida Light. It was automated on May 7, 1975, and as of 2021 is still in operation. The structure is cast iron, with a screw-pile foundation, a platform and a skeletal tower. The light is 110 feet above the water. The tower framework is painted brown, while the dwelling and enclosed circular stair to the lantern is painted white. The original lens was a first-order drum Fresnel lens which stood about 12 feet (4 m) high and weighed about a ton (tonne). The light has a nominal range of 15 miles in the white sectors, and 10 miles in the red sectors.
Sand Key Light is a lighthouse 6 nautical miles southwest of Key West, Florida, between Sand Key Channel and Rock Key Channel, two of the channels into Key West, on a reef intermittently covered by sand. At times the key has been substantial enough to have trees, and in 1900 nine to twelve thousand terns nested on the island. At other times the island has been washed away completely.
The unmanned reef lights of the Florida Keys were navigational aids erected near the Florida Keys between 1921 and 1935. They were intended to mark local hazards and did not need to be visible for as far as the reef lights that were erected near the Keys during the 19th century. By the time the lights in this list were erected, older lighthouses were being automated, and these new lights were designed to be automated from the start. The lights resembled the older reef lights in having a wrought iron skeletal pyramidal structure on a screw-pile foundation. They all originally had lanterns on their peaks, so that they looked like smaller versions of the older reef lights, but had no keeper's quarters.
Heceta Head Light is a lighthouse on the Oregon Coast 13 miles (21 km) north of Florence, and 13 miles (21 km) south of Yachats in the United States. It is located at Heceta Head Lighthouse State Scenic Viewpoint, a state park, midway up a 205-foot-tall (62 m) headland. Built in 1894, the 56-foot (17 m)-tall lighthouse shines a beam visible for 21 nautical miles, making it the strongest light on the Oregon Coast.
Kenosha Light is a lighthouse and keeper's house on Simmons Island north of the channel into Kenosha's harbor in Kenosha County, Wisconsin, USA.
Tillamook Rock Light is a deactivated lighthouse on the northern Oregon Coast of the United States. It is located approximately 1.2 miles (1.9 km) offshore from Tillamook Head, and 20 miles (32 km) south of the mouth of the Columbia River near Astoria, situated on less than an acre of basalt rock in the Pacific Ocean. The construction of the lighthouse was commissioned in 1878 by the United States Congress and took more than 500 days to complete. Shortly before the completion of the lighthouse in January 1881, the barque Lupatia was wrecked near the rock during foggy weather and sank, with the loss of all 16 crew members.
The Cheboygan Crib Light is a light that marks the west pier head of the mouth of the Cheboygan River into Lake Huron. The pier head, in the center of the municipality of Cheboygan, is located at the north or lake end of Huron Street, and is one of the centerpieces of Cheboygan's Gordon Turner Park.
The Semiahmoo Harbor Lighthouse was a lighthouse on Semiahmoo Bay near the port of Blaine, Whatcom County, Washington, in the United States.
Point Adams Light was a lighthouse near the mouth of the Columbia River on the Oregon Coast of the United States. The lighthouse was designed by Paul J. Pelz, who also designed Point Adams's sister stations, Point Fermin Light in San Pedro, California, East Brother Island Light in Richmond, California, Mare Island Light, in Carquinez Strait, California, Point Hueneme Light in California, and Hereford Inlet Light in North Wildwood, New Jersey, all in essentially the same style. It operated from February 15, 1875, until 1899, when it became obsolete by the extension of the south jetty and the establishment of the Lightship Columbia in 1892. The lighthouse was considered a fire hazard and demolished in 1912.
Tawas Point Light is located in the Tawas Point State Park off Tawas Bay in Lake Huron in Baldwin Township in Northern Michigan.
Warrior Rock Light is a lighthouse on Sauvie Island in the U.S. state of Oregon, which helps guide river traffic on the Columbia River around the Portland, Oregon area. It once contained the Pacific Northwest's oldest fog bell. It is Oregon's smallest lighthouse, and the only lighthouse, or one of only two lighthouses, still operating in Oregon which are not on the Pacific Ocean, depending on whether the Umpqua River Lighthouse is considered to be on the coast or on the Umpqua River.
Plum Island Light is located on the western end of Plum Island, which lies in the Long Island Sound, east of Orient Point at the end of the North Fork of Long Island, New York. An historic granite lighthouse originally built in 1869 sits at the site, but no longer serves as an active aid to navigation. It was listed on the National Register of Historic Places in 2011.
Borden Flats Light is a historic lighthouse on the Taunton River in Fall River, Massachusetts, US. It is a tower-on-caisson type known as a sparkplug lighthouse.
The One Fathom Bank Lighthouse refers to two offshore lighthouses in the Strait of Malacca, specifically, on a shoal within Malaysian waters, dubbed One Fathom Bank, off the coast of the state of Selangor.
Cleft of the Rock Light is a privately owned lighthouse located on the Pacific coast of the U.S. state of Oregon, 1.8 miles (2.9 km) south of Yachats on Cape Perpetua.
The Willamette River Light was a navigational lighthouse at the mouth of the Willamette River in the U.S. state of Oregon near Portland, which marked the confluence of the Columbia and Willamette Rivers. It existed as a lighthouse with keeper from 1895 to 1935, and as an unattended light from 1935 onwards. The original building burned down in 1955. The only visible remains of the station today are broken wooden pilings sticking out of the water near Kelley Point Park.
