The lighthouse at Cranstal is the Point of Ayre Lighthouse, marking the northernmost tip of the Isle of Man. It was built by the Northern Lighthouse Board's chief engineer, Robert Stevenson, following an 1815 Act of Tynwald authorising its construction, and was first lit in 1818, making it the oldest operational lighthouse on the island; the keepers arriving before the building was finished reportedly had to lodge with a farmer two miles away. Its powerful foghorns, once audible as far as the Mull of Galloway 26 miles distant, have since been retired, and the light itself was automated in 1993. It was registered as a protected building in November 1993.