At the end of Gaden Lam is Dechen Phodrang, the site of Thimphu's original 12th-century dzong. Since 1971 it has housed the state lobra (monastic school), providing an eight-year course to more than 250 students. The 12th-century paintings in the goemba's main chapel have been restored, and the upper floor features a large figure of Zhabdrung Ngawang Namgyal. There is also a spooky side goenkhang (chapel dedicated to protective deities).