Camp Jupiter.

Camp Jupiter is the Roman demigod training camp. Not only do the demigods train to fight there, but they live there as they grow old. The town is a revelation to Percy who didn't know that there was a Roman camp. He also never thought that there could be a place where he and Annebeth could grow old together and live peacefully. The camp is reluctant to take Percy in, but they do so when they are told by the goddess Juno that he is the son of Neptune. However, Percy doesn't fully gain the trust of the camp until he helps to defeat Polybotes who is set on destroying the place.

Riptide.

This is Percy Jackson's sword. It is a pen that turns into a sword made of Celestial bronze. Riptide was given to Percy when he first found out he was a Greek demigod...