This is Larung Gar Budhist Academy in Sertar, probably the biggest religious institute in the world. There are more than 30,000 monks and nuns living here. The settlement was founded in 1980 to provide an ecumenical training in Tibetan Buddhism. Since then many students moved in and built their homes. The site is located above 4000 m.a.s.l. and sometimes it gets down to around -20°C in winter.