The Turn Point Light Station is an active aid to navigation overlooking Haro Strait from the western tip of Stuart Island, San Juan County, Washington...

the Turn Point Light Station, a lighthouse guiding shipping in the busy waters of Boundary Pass to the island's north. Turn Point Light Station is on...

between Lake Superior and other Great Lakes. Point Iroquois includes a larger geographic area than the light station site. It was named for the Iroquois warriors...

Francisco, in the Fort Point Group of lighthouses. The lighthouse features a small museum and gift shop. Guided tours of the light station as well as self-guided...

The West Point Light, also known as the Discovery Park Lighthouse, is an active aid to navigation on Seattle, Washington's West Point, which juts into...

as Point Cabrillo Light Station State Historic Park. It should not be confused with the inactive Old Point Loma Lighthouse or the active New Point Loma...

Point Conception Light is a lighthouse in Santa Barbara County, California, on Point Conception at the west entrance of the Santa Barbara Channel, California...

fire and ambulance stations on major roads, which, when activated by the station, flash alternatively (so that at any time one red light is always showing)...

River, at a point where the normally south-flowing river makes a sharp turn to the east, followed by a turn back to the south. The light is set at the...

Point Lookout Light is a lighthouse that marks the entrance to the Potomac River at the southernmost tip of Maryland's western shore of the Chesapeake...

Point Betsie Light is located on the northeast shore of Lake Michigan — at the southern entrance to the Manitou Passage — north of Frankfort in Benzie...

Monument. The first light at Cattle Point was a lens lantern on a post erected in 1888. In 1921, the U.S. Navy installed a radio compass station. The modern 34-foot...

The Makapuʻu Point Light on the island of Oʻahu has the largest lens of any lighthouse in the United States. It was listed on the National Register of...

The historic Grosse Point Light is located in Evanston, Illinois. Following several shipping disasters near Evanston, residents successfully lobbied the...

Historian's Office. Archived from the original on 2017-05-01. Wikimedia Commons has media related to Point Loma Light Station. National Park Service site...

(110 m) rock at the head of the point. It was established in 1889 and is part of Point Sur State Historic Park. The light house is 40 feet (12 m) tall and...

The Cove Point Light is a lighthouse located on the west side of Chesapeake Bay in Calvert County, Maryland. This light was built in 1828 by John Donahoo...

Long Point Light Station is a historic lighthouse at the northeast tip of Long Point in Provincetown, Massachusetts. As a navigational aid, it marks the...

Point No Point Light is an operational aid to navigation on the northeastern tip of the Kitsap Peninsula on the west side of Puget Sound, at Point No Point...

The Big Bay Point Light is a lighthouse which stands on a tall bluff over a rocky point near Big Bay, Michigan, approximately 24 miles (39 km) northwest...

The Point Wilson Light is an active aid to navigation located in Fort Worden State Park near Port Townsend, Jefferson County, Washington. It is one of...

The Marrowstone Point Light is an active navigational aid overlooking Admiralty Inlet at the northern tip of Marrowstone Island, Jefferson County, Washington...

present day light stations and aids to navigation work. During the interim of World War II, the Coast Guard manned Point Arguello Light and Point Arguello...

Pierce County, Washington. Cupy the first light station on Browns Point, erected in 1887, consisted of a white light lens lantern on a white post that stood...

the filament to expand and contract, in turn causing micro stress cracks to develop. The more the light is turned on and off, the larger these cracks grow...

The Point Robinson Light is an operational aid to navigation and historic lighthouse on Puget Sound, located at Point Robinson, the easternmost point of...

A light-emitting diode (LED) is a semiconductor device that emits light when current flows through it. Electrons in the semiconductor recombine with electron...

for a light station. A true lighthouse was never built and the land was transferred to Whatcom County for use as a county park. In 2000, the Point Roberts...

double-tracking work to provide a turn-back point for trains not going all the way to Hunt Valley, which could be converted into a station at a later date. In the...

The Detroit River Light, also known as Bar Point Shoal Light, was first established as a lightship in 1875. The current sparkplug lighthouse was built...