I like the Planescape planes that correspond to various alignments, the so-called Outer Planes (the others are Inner Planes, the Ethereal Plane, the Prime Material Plane and the Astral Plane).
Outer Plane - Wikipedia, the free encyclopedia
Neutral Good:
Elysium: The plane of peace and unadulterated goodness.
Neutral Good / Chaotic Good:
The Beastlands: The plane of idealized nature.
Chaotic Good:
Arborea: Fey realm of passion, abundance and nature's caprice.
Chaotic Neutral / Chaotic Good:
Ysgard: The eternal battleground where true heroes prove their valor.
Chaotic Neutral:
Limbo: An alien, anarchistic and unpredictable plane.
Chaotic Evil / Chaotic Neutral:
Pandemonium: An infinite network of pitch-black catacombs, with winds that drive men mad.
Chaotic Evil:
The Abyss: Evil lands of shocking perversity and unpredictable horror.
Neutral Evil / Chaotic Evil:
Carceri: Liars, cheats and traitors are imprisoned here by their own deceptions.
Neutral Evil:
The Grey Waste: Here, all emotion and compassion is drained away, until only hopelessness, selfishness and apathy remain as baatezu and tanar'ri meet and clash in a colorless expanse.
Neutral Evil / Lawful Evil:
Gehenna: Volcanic realm of evil schemes and merciless cliffs.
Lawful Evil:
Baator: A realm of oppression, torment, and diabolical plots
Lawful Neutral / Lawful Evil:
Acheron: A plane of constant, pointless war, where identity is forever lost.
Lawful Neutal:
Mechanus: This clockwork plane is the ultimate in order; scholars and constructs live here.
Lawful Neutral / Lawful Good:
Arcadia: A peaceful world of wildlands and kingdoms where all live in harmony.
Lawful Good:
Mount Celestia: Countless paladins and saints have ascended here.
Neutral Good / Lawful Good:
Bytopia: Gnomes and other industrious folk dwell here.
True Neutral:
The Outlands: The plane between all other outer planes.
The Outlands also have 16 "gate towns": "settlements which are built around a permanent portal to a certain Outer Plane on the Great Wheel. Gate-towns are important strategically because they provide a (relatively) stable way to enter a desired Outer Plane."