Argo II

While it acts as an object itself, the Argo II is also the setting for much of the action to take place. This is where, for example, Chrysaor attacks the demigods but is defeated when he believes that Dionysus is aboard. This is where many of the demigods have deep conversations, have prophetic nightmares, and sail to and from one adventure to the next.

Camp Jupiter

This is the Roman equivalent of Camp Half-blood, but they are more militaristic. They are ruled by military order and rank systems. Of course, it is clear that it is prone to corruption, as evidenced by Octavian. Camp Jupiter vows revenge after Leo (possessed by a Eliodon) fires on the camp. They determine to march on Camp Half-blood.

Pillars of Hercules

This is the crossing into the Mediterranean that the demigods need to pass through. Unfortunately, it is guarded by none...