What is The Burnt House/The Wolf House?

The Wolf House is the old house of Jack London, a famous writer who was also a son of Mercury. He called it the Wolf House because he was raised and trained by Lupa, the leader of the Roman demigod camp. The house burnt down in a fire and is now the site of a park. The Wolf House is also sacred ground for the Roman demigods, as it is where they are claimed by Lupa before being taken to the camp. It is at the Wolf House that Hera is being held prisoner and Porphyrion is breaking through. It is here that the final battle of the book takes place.