The Mark of Athena
Book 3 (2012) · 11 locations
Locations
Camp Jupiter
Camp Jupiter (Roman Demigod Camp)
The Argo II arrives at Camp Jupiter. Tensions rise between Greek and Roman campers before the quest begins.
Colosseum
Colosseum (Lair of Monsters)
Percy and Jason battle in the Colosseum's underground hypogeum against Otis and Ephialtes.
Pantheon
The demigods pass through the Pantheon area while navigating Rome on their quest.
Piazza Navona
The demigods navigate through Piazza Navona during their exploration of Rome.
Tiber Island
Isola Tiberina (Island of Healing)
Referenced as a place of ancient healing power connected to the Roman gods.
Castel Sant'Angelo
The fortress plays a role in the demigods' navigation of ancient Rome's mythological underside.
Underground Rome
The Athena Parthenos Chamber
Annabeth follows the Mark of Athena through Rome's underground tunnels, defeats Arachne, recovers the Athena Parthenos, and falls into Tartarus with Percy.
Great Salt Lake
The Argo II encounters Phorcys and Keto near the Great Salt Lake during their eastward journey.
Georgia Aquarium
Percy and Frank visit the Georgia Aquarium and are trapped by Phorcys and Keto, who run the aquarium as a front for imprisoned sea creatures.
Fort Sumter
The Argo II stops in Charleston. Annabeth, Piper, and Hazel visit the city's historic areas and encounter a trap.
Strait of Gibraltar
Pillars of Hercules
The Argo II reaches the Pillars of Hercules. Jason and Piper must negotiate with Hercules to pass through into the Mediterranean.