Fields of Punishment

The Fields of Punishment, found in the Underworld. It is meant to punish people for doing extremely horrible things (using multiple torturous methods).

History
The Fields of Punishment is where people who were evil in life face eternal punishments for their crimes. Usually the wicked would be condemned to Tartarus in Greek Mythology but the wicked would end up here in this series. Percy says he saw people chased by hellhounds, burned at the stake, forced to run naked in cactus patches, listen to opera music and other things he doesn't want to describe.

The Lightning Thief
In The Lightning Thief, Percy sees the Fields of Punishment while he is in the Underworld. Later, when his quest is over, he wonders whether he has the right to send Gabe there. He also notes that he saw the spirit of an "annoying" televangelist going to the Fields of Punishment while being surrounded by security ghouls.

The Sea of Monsters
The Fields of Punishment do not appear in The Sea of Monsters, but Tantalus is brought to Camp Half-Blood from there. Tantalus was cursed by standing in a pond and a fruit tree hanging over him but he could never eat or drink as the fruit and water would move out of reach from him when he tried to eat or drink it. The same curse applies to him anywhere else until it was removed by Dionysus before Tantalus disappeared back to the Fields of Punishment, where the punishment resumed in the Underworld.

The Demigod Files
In Percy Jackson and the Sword of Hades, Percy, Thalia and Nico travel to the Fields of Punishment to question Sisyphus.

The Son of Neptune
After Hazel Levesque used her power over the earth to delay the rebirth of Alcyoneus in 1942, her mother Marie was initially condemned to the Fields of Punishment, while Hazel would enter Elysium. However, Hazel persuaded the judges to split the blame for Marie's evil actions between them, and both souls were sent to the Fields of Asphodel instead.

Appearance
A rocky path leads to it. It glows and smokes. It has cracked wasteland, rivers of lava, and minefields and barbed wire separating the different torture areas.