Thubchen gompa in Lo Manthang is a single-story fifteenth century Sakya-pa dukhang (assembly or prayer hall). Above and to the right of the main entrance door is an excellent large painting of what I think is green Amoghasiddhi, the Dhyani Buddha of the north, in the mudra of fearlessness. British architect John Sanday on Thubchen gompa: "I began to realize how fantastic the wall paintings actually were. They are fifteenth century, they are priceless. These are masterpieces." Art conservator Rodolfo Lujan from Rome led the restoration of the paintings using the same techniques as the Sistine Chapel.