Lews Castle is a striking mid-19th century baronial mansion overlooking Stornoway on the Isle of Lewis in Scotland's Outer Hebrides, built by merchant Sir James Matheson between 1847 and 1854 after he acquired the island. Matheson, who amassed his wealth through the opium trade in China, constructed the castle on the site of Seaforth Lodge and surrounded it with extensive landscaped grounds. The estate's trajectory transformed dramatically when Lord Leverhulme, founder of Lever Brothers, purchased the property in 1918 and gifted it along with 64,000 acres to the people of Stornoway in 1923, a gesture of remarkable philanthropy. Following use as a World War II naval hospital and later as college accommodation, the castle underwent comprehensive restoration and now houses the Museum nan Eilean (Museum of the Isles), opened in 2016. The 270-hectare estate encompasses woodland, parkland, and gardens that remain in community ownership, providing cultural facilities, accommodations, café services, and luxury self-catering apartments.