Boudhanath (; also written as ''Bouddhanath'', ''Bodhnath'', ''Baudhanath'' or the ''Khāsa'' ''Chaitya''), is one of the holiest Buddhist sites in Nepal, along with the Swayambhunath. It is a very popular tourist site. Boudhanath is known as Khāsti by Newars and as Bauddha or Bodhnāth by speakers of Nepali. About  from the centre and northeastern outskirts of Kathmandu, the stupa's massive mandala makes it one of the largest spherical stupas in Nepal. Boudhanath became a UNESCO World Heritage Site in 1979.