Haghpat Monastery, also known as Haghpatavank ("Հաղպատավանք" in Armenian), is a medieval Armenian monastery complex in Haghpat, Armenia. Described as a "masterpiece of religious architecture and a major center of learning in the Middle Ages", this venerable institution of the Armenian Apostolic Church was placed on UNESCO's World Heritage List in 1996. The monastery was founded by Saint Nishan (Sourb Nshan) in the 10th century during the reign of King Abas I. The nearby monastery at Sanahin was built around the same time. Today the area is an increasingly-popular tourist site.