What is the oldest active lighthouse in the world?
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The Hook Lighthouse (; also known as Hook Head Lighthouse) is a building situated on  Hook Head at the tip of the Hook Peninsula in County Wexford, in Ireland. It is one of the oldest lighthouses in the world and the second oldest operating lighthouse in the world, after the Tower of Hercules in Spain. It is operated by the Commissioners of Irish Lights, the Irish Lighthouse Authority, it marks the eastern entrance to Waterford Harbour. The current structure has stood for 846 years as of 2018.
Hook Lighthouse
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Boston Light is a lighthouse located on Little Brewster Island in outer Boston Harbor, Massachusetts. The first lighthouse to be built on the site dates back to 1716, and was the first lighthouse to be built in what is now the United States. The current lighthouse dates from 1783, is the second oldest working lighthouse in the United States (after Sandy Hook Lighthouse in New Jersey), and is the only lighthouse to still be actively staffed by the United States Coast Guard, being automated in 1998 though there is still a keeper acting as tour guide. The structure was designated a National Historic Landmark in 1964.
Boston Light
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Ocracoke Light is the oldest operating light station in North Carolina and the second oldest lighthouse still standing in the state. The lighthouse was automated in 1955. During the summer months when there is a U.S. National Park Ranger on duty, visitors may access the base of the lighthouse. Access to the top of the lighthouse is not allowed due to the simple steel spiral staircase being safe only for maintenance activity.
Ocracoke Light
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The first lighthouse in the state was lit in 1822 and the last in 1965 (ignoring automated towers erected later); the oldest surviving structure is the Pooles Island Light and the oldest still active is the Cove Point Light. The tallest extant tower is the Craighill Channel Lower Range Rear Light.
List of lighthouses in Maryland
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Point Pinos Lighthouse was lit in 1855 to guide ships on the Pacific coast of California. It is the oldest continuously operating lighthouse on the West Coast of the United States and even the lens is original. Alcatraz Island Lighthouse preceded Point Pinos by 8 months, but was replaced in 1909 by the expanding military prison. The Point Pinos Lighthouse is still an active Coast Guard aid to navigation. On-site museum exhibits and other lighthouse related functions are operated by the city of Pacific Grove, Monterey County, California. The lighthouse is surrounded by the Pacific Grove Municipal Golf Links.
Point Pinos Lighthouse
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The Mikomotojima Lighthouse is currently the oldest lighthouse still in use in Japan. It is registered with the International Association of Lighthouse Authorities as one of the “One Hundred Most Important Lighthouses in the World” and by the Japanese government as a National Historic Monument.
Mikomotoshima Lighthouse
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The Point of Ayre Lighthouse is an active 19th century lighthouse, sited at the Point of Ayre at the north-eastern end of the Isle of Man. It was designed and built by Robert Stevenson, grandfather of prolific writer and novelist Robert Louis Stevenson, and was first lit in 1818, making it the oldest operational lighthouse on the island.
Point of Ayre Lighthouse
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This is a list of all lighthouses in the U.S. state of Delaware as identified by the United States Coast Guard. The first lighthouse in the state was erected in 1769 and the last in 1925 (ignoring automated towers erected later); the oldest active light is the Fenwick Island Light.
List of lighthouses in Delaware
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Ilha da Moela Lighthouse () is an active lighthouse on the namesake island located from Ponta do Munduba at the entrance of Santos Bay, Brazil. Ilha da Moela Lighthouse is the oldest lighthouse on the State of São Paulo coast and the entire island is a Brazilian Navy base.
Ilha da Moela Lighthouse
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The Porto Pí lighthouse is one of the oldest operating lighthouses in the world, and a historic monument. It is located in Palma harbour on the Balearic Island of Majorca.
Porto Pí lighthouse