Gleneagles is a glen which connects with Glen Devon to form a pass through the Ochil Hills of Perth and Kinross in Scotland. Gleneagles House at the northern entrance to Gleneagles comprises a 1750 extension to an earlier 17th-century building that is approached by an avenue of lime trees planted to commemorate the Battle of Camperdown. Little remains of Gleneagles Castle, the early 16th-century tower house of the Haldanes. The Caledonian Railway Company used its name for the Gleneagles Hotel and golf course they built some distance from the glen at the edge of Auchterarder. The hotel hosted the controversial G8 conference in July 2005, which earned the area the description of "the most fortified golf course in Scotland" due to extensive security.