Portrush () is a small seaside resort town on the north coast of County Antrim, Northern Ireland. It neighbours the resort of Portstewart. The main part of the old town, including the railway station as well as most hotels, restaurants and bars, is built on a –long peninsula, Ramore Head. It had a population of 6,454 people at the 2011 Census. The town is well known for its three sandy beaches, the West Strand, East Strand and White Rocks, as well as the Royal Portrush Golf Club, the only golf club outside Great Britain which has hosted The Open Championship in 1951 and 2019. A number of flint tools found during the late 19th century show that the site of Portrush was occupied during the "Larnian" (late Irish Mesolithic) period; recent estimates date this to around 4000 BC. The site of Portrush, with its excellent natural defences, probably became a permanent settlement around the 12th or 13th century. A church is known to have existed on Ramore Head at this time, but no part of it now survives. From the records of the papal taxation of 1306, the Portrush church – and by extension the village – appears to have been reasonably wealthy. The promontory also held two castles, at varying periods. The first of these, Caisleán an Teenie, is believed to have been at the tip of Ramore Head, and probably destroyed in the late 16th century; the other, Portrush Castle, may have been built around the time of the Plantation of Ulster in the early 17th century. Nothing survives of either castle. Following the Wars of the Three Kingdoms in the mid-17th century, Portrush became a small fishing town. It grew heavily in the 19th century as a tourist destination, following the opening of the Ballymena, Ballymoney, Coleraine and Portrush Junction Railway in 1855, and by the turn of the 20th century had become one of the major resort towns of Ireland, with a number of large hotels and boarding houses including the prominent Northern Counties Hotel.