The National Trust for Scotland for Places of Historic Interest or Natural Beauty, commonly known as the National Trust for Scotland is a Scottish conservation organisation. It is the largest membership organisation in Scotland and describes itself as "the conservation charity that protects and promotes Scotland's natural and cultural heritage for present and future generations to enjoy".The Trust owns and manages around 130 properties and 180,000 acres of land, including castles, ancient small dwellings, historic sites, gardens, and remote rural areas. It is similar in function to the National Trust, which covers England, Wales, and Northern Ireland, and to other national trusts worldwide.