A picture of the Gateway Arch in St. Louis, Missouri. In The Lightning Thief, this is where Percy encounters a monster and jumps from the top of the arch to the water below.
A picture of the Metropolitan Museum of Art in New York City. This is the opening location of The Lightning Thief and where Percy has his first encounter with a Fury.
A picture of Montauk Beach in Long Island. In The Lightning Thief, this is where Percy's mom met Poseidon and where she continues to rent a beach house to take Percy to during the summer.
A picture of West Hollywood, California. In The Lightning Thief, West Hollywood is the location of the fictional recording studio that houses an entrance to the Underworld.