The Mall/The Community Center/ Taco Bell construction - the "PTA problems" quest
Token's House the "Call The Banners" (Token) quest.
Bijou Movie Theater - behind the theater, you meet Al Gore for the first time.
Tweek Bros. Cofee - the "Call The Banners" (Tweek), "Gain new Allies" quests.
U-Stor-It - the "ManBearPig", "Wasted cache", "Gain New Allies", "The Homeless Problem" quests.
The Farm the "ManBearPig", "Magical Songs", "Big Game Hunting" (cow).
Canada the "Oh, Canada", "Big Game Hunting" (spider) guests. To get to Canada, you need to go North four times, in the Lost Forest. You need a passport to pass through passport control. You will receive the passport during the "Forging of Alliances" quest.
The South Park Courier - the key is at the post office
Sewer Entrance - going down to the sewers requires the teleportation probe. The "ManBearPig", "Big Game Hunting" (mouse, bat), "Homeless", "Dropping The Kids Off" quests.
The Post Office the "Package for Mr. Slave" quest
Office building - the key is at Tom's
Tom's Rhinoplasty - you can get your nose surgery. The basic surgeries do not alter your looks in any way. The most expensive surgery (Hoff) glues David Hasselhoff's picture onto your character.
The Bank - you can "invest", i.e. lose $20 with each investment you make.
Unplanned Parenthood - the "Forging of Alliances" quest
Photo Dojo the "To the North" quest
Playground/the girls' HQ the "Hide n' Seek","Forging of Alliances" quests.
Mr. Slave's House the "Package for Mr. Slave" quest.
Jimmy's House/ The Giggling Donkey Inn the "Bard" quest
The Bus Stop The "Homeless Problem" quest
The New Kid's House - your character's house. Inside, you will find your parents and your stash.
Butters's House
Carman's House/ The Kingdom of Kupa Keep - the "New Kind in Town", "Call the Banners", Gain New Allies"< "A Flower for A Princess" quests.
Stan's House the "She-Ogre" quest
Kyle's House/The Elven Kingdom - the "Gain New Allies", "Forging of Alliances", "She Ogre", "Restoring the Balance", "Magical Songs" quests.
Kenny's House The "Call the Banners" (Tweek), "ManBearPig", "The Homeless Problem" quests.
The Lost Forest - a forest labyrinth. Several locations that repeat, on a regular basis, regardless of where you go. From here, you can go to three locations - Canada, back to South Park and to the secret location with the Woodland Critters. To get to Canada, you need to go North four times. To return to the town, keep going to the South. You can get to Woodland Critters by going East, North, East South, East. If you wander around the forest, you will be found by the parents and taken home.