#5 The Last Olympian

A picture of Battery Park in New York City. In The Last Olympian, Battery Park is the location where Percy goes to talk with the East and Hudson Rivers.

A picture of Central Park in New York City. This is another entrance to the Underworld in The Last Olympian that Percy and Nico use to get to the River Styx.

A picture of the Plaza Hotel in New York City. In The Last Olympian, this is where Percy and his friends go to recuperate during the battle.

A picture of the South Shore of Long Island, New York. This is the opening location of The Last Olympian where Percy is hanging out with Rachel Elizabeth Dare.

A picture of the North Shore of Long Island, New York. Throughout the series, this is the location of Camp Half-Blood.

A picture of Mount Tamalpais in California. In multiple books in the series, this is the location of the Garden of the Hesperides and Mount Othrys.