Bulgarian has been famous for its ski resorts for many years. Ski apartments can be found at the international resorts of Bansko, Borovets and Pamporovo, as well as numerous smaller resorts such as Chepalare and Govedartsi. But apartments in the mountains are not only suitable for winter use. Rural tourism is a growing attraction in Bulgaria, with plenty of outdoor activities for adventurous people (such as sky-diving, rafting and quad-bikes) as well as more sedate activies such as golf or pony trekking. Ski and mountain apartments offer all-year rental opportunities. The clear, unpolluted air and the abundance of mineral springs makes these apartments perfect for spa holidays.