Poshley Heights (Japanese ピカリーヒルズ Pikarī Hiruzu) is a posh village that Mario travels to in the Excess Express to get the sixth Crystal Star, the Garnet Star, in Paper Mario: The Thousand-Year Door. It is also the home of many wealthy celebrities, including Goldbob and Toodles. Many Bumpties live here as well. Bow and Bootler vacation here after Mario and company defeat the Shadow Queen.
"Posh" means fashionable, and absolutely everything in the town is fancy and expensive.
Poshley Heights also has a hidden room that holds a Treasure Chest, which is in Goldbob's home.
Poshley Heights has the only inn in Paper Mario: The Thousand-Year Door that has more than one room. (Not counting Rogueport.) This inn is similar to the Marrymore suite from Super Mario RPG: Legend of the Seven Stars.