Kerak Castle is a large crusader castle located in Kerak in Jordan. It is one of the largest crusader castles in the Levant. Construction of the castle began in the 1140s, under Pagan, Fulk of Jerusalem's butler. The Crusaders called it Crac des Moabites or "Karak in Moab", as it is frequently referred to in history books.Paganus was also Lord of Oultrejordain (Transjordan), and Karak became the centre of his power, replacing the weaker castle of Montreal to the south.