Camp Half-Blood hosts the demi-gods of children of the gods. (Mostly the Olympus gods) The children are half god half human. Monsters are always after Demi-Gods due to their divine blood so they stay at camp where a border from the magical fleece protects them. There is an arena for training, a mess hall to eat, cabins for each God (the gods have multiple children), a big house for meetings and quests, a lake, and an ocean next to camp. Chiron (a centuar) and Mr.D (his punishment) runs the camp.