Camp Half-Blood



a Greek demigod training facility located on Long Island Sound behind Thalia's tree before the Golden fleece turned her back into a demigod. It's directed by Dionysus (who is called "Mr. D") and Chiron the centaur. It is also the Greek counterpart of Camp Jupiter, a Roman camp in San Francisco, California.

The camp has magical borders which are enforced by the Golden Fleece, which was found by the satyr Grover, the Cyclops Tyson, and demigods Percy Jackson,Clarisse La Rue, and Annabeth Chase. Taken fromPolyphemus' island, it was placed on Thalia's pine tree, ensuring that no monsters could gain access to the camp. In earlier years, it was a pine tree made from Thalia, a daughter of Zeus. After almost being killed by monsters, Zeus pitied her but wanted to keep her alive so he turned her into a pine tree, making it so she wouldn't die. Her tree became the official borders of Camp Half-Blood. The Fleece stayed on the tree, guarded by a dragon (Peleus), protecting the camp.

The camp is described as being the only safe haven for half-bloods, although in The Lost Hero it is revealed that there is a camp for Roman demigods which is revealed in The Son of Neptune to be called Camp Jupiter.

The half-bloods live in cabins (one for each Olympian god and goddess, though many more cabins were added later for the minor gods and goddesses (because of Percy's request in The Last Olympian), and they eat at the dining pavilion. There is also an archery field, a sword fighting arena, a climbing wall with lava for training, an amphitheater, stables, an armory, and the Big House.