In short story The Sword of Hades, multiple locations are mentioned most of which are in the Underworld.  The reason for Persephone gathers Percy, Thalia and Nico to find The Sword of Hades.  In the story they go to many parts, rivers, cliffs and fields to find the sword.

Pages in category "The Sword of Hades places"

The following 4 pages are in this category, out of 4 total.