Elysium

Elysium (Greek: Ἠλύσιον πεδίον, Ēlýsion pedíon, Elysium Fields and Elysian Fields) is located in the Underworld. Initially separate from the Underworld, Elysium was reserved for good mortals and heroes who had died a hero's death and lived a good life. Chosen by the gods, the souls of mortals and demigods who have been good, righteous, heroic, would remain after death, to live a blessed and happy eternal death, and indulge whatever employment they had enjoyed in life.

Elysium is like a gated community with golden gates and laughter can be heard from inside. One can smell barbecue cooking from inside as well. The lands of Elysium also has Greek buildings, Roman marble mansions, and Victorian villas everywhere.

Compared to the Asphodel and even the Fields of Punishment, Elysium was one of the fewer realms in the Underworld, which also contains the Isles of the Blest. The Isles of the Blest is a large island that resides in Elysium and borders the lands or fields of Elysium. It is described as having shady parks, with residents indulging their athletic and musical pastimes and surrounds a lake. If heroes chooses to be reborn three times and achieve Elysium in all three, they are invited to the Isles of the Blest.

The Lightning Thief
When entering the Underworld for the first time, Percy sees Elysium in the distance.