Thangtong Gyalpo (1385-1509 or 1361–1485), also known as Chakzampa and Tsondru Zangpo, was a great Buddhist adept, yogi, physician, blacksmith, architect, and a pioneering civil engineer.  He composed For the Benefit of All Beings as Vast as the Skies, the Chenrezik sadhana that is a daily practice in many western centers.

He is well known for founding Ache Lhamo, (Tibetan opera), and is famous for his extensive travels in China, Tibet, and other eastern countries, building numerous temples and metal bridges and ...