Places in the Greek Myths
Mount Olympus
Mount Olympus towers up from the center of the earth. Here the major gods live and hold court. The myths are somewhat vague on whether it is an actual mountain or a region of the heavens.
The Underworld
The underworld is hidden in the earth. It is the kingdom of the dead and ruled over by Hades. Hades is a greedy god who is greatly concerned with increasing his subjects. Those whose calling increase the number of dead are seen favorably. The Erinyes are welcomed guests. He is exceedingly disinclined to allow any of his subjects leave.
For most, life in the underworld is not particularly unpleasant. It is rather like a miserable dream, full of shadows, without sunlight or hope. A joyless place where the dead slowly fade into nothingness.
Geographically, the underworld is surrounded by a series of rivers: The Acheron (river of woe), The Cocytus (river of lamentation), The Phlegethon (river of fire), The Styx (river of unbreakable oath by which the gods swear), and The Lethe (river of forgetfulness). Once across the rivers an adamantine gate, guarded by Cerberus, forms the entrance to the kingdom. Deep within the kingdom is Hades vast palace, complete with many guests.
Upon death a soul is lead by Hermes to the entrance of the underworld and the ferry across the Acheron. There is a single ferry run by Charon to take the souls across the river. Only those who can pay the fare, with coins placed on their lips when buried, receive passage. The rest are trapped between two worlds. The souls then enter through the gates. Cerberus will allow all to enter but, none to leave. The souls then appear before a panel of three judges, Rhadamanthus, Minos I, and Aeacus, who pass sentence. The very good go to the Elysian Fields. Others are singled out for special treatment. Sisyphus and Tantalus being prime examples of the later.
Tartarus
Tartarus is the lowest region of the world, as far below earth as earth is from heaven. According to the Greek poet Hesiod, a bronze anvil falling from heaven would take nine days and nights to reach earth, and an object would take the same amount of time to fall from earth into Tartarus. Tartarus is described as a dank, gloomy pit, surrounded by a wall of bronze, and beyond that a three-fold layer of night. Along with Chaos, Earth, and Eros, it is one of the first entities to exist in the universe.
While Hades is the main realm of the dead in Greek mythology, Tartarus also contains a number of characters. In early stories, it is primarily the prison for defeated gods; the Titans were condemned to Tartarus after losing their battle against the Olympian gods, and the hecatoncheires stood over them as guards at the bronze gates. When Zeus overcomes the monster Typhus, born from Tartarus and Gaia, he hurls it too into the same abyss.
ElysianFields
Elysium. In Greek mythology, the abode of the blessed, paradise. Situated at the end of the world it is here that those chosen by the gods are sent to.