Dr. Yosh's Auditorium where Dr. Yosh in episode 10 the day the doctors met he was going to explain something to the half of the city until Dr. Goomb was a guest with mario and sonic and trouble started.
Outside where cute sonic heroes had a lot of fun episode 3 Outside fun and episode 10 when Sonic and Mario were having a duel! remember when Sonic and Mario fell and started to fal and slide along the cars all the way back to there room which is under this passage \/
Sonic and Mario's room where they sleep and play video games like Brawl New super mario bros. wii! maybe in the next episode Sonic and Mario will play Sonic adventure 2 battle like Mario did in episode 2 rise of metal face 1/3
The hospital where Metal Face tried to murder mario and Sonic but the cute sonic heroes found a way how to make him faint and run away from the hospital Metal face might even be back but no one knows when.....
When sonic found his long lost bro he hasn't seen since 10 years SMART SONIC and weeks later he found ANOTHER person lost and hungry one pore horse CLOE! so maybe! he might find another person wandering around his house and might be found in the kitchen!? he also cooks pankakes there to sometimes so does Mario.
The main place in every episode they be where everyone can see them! Mario get's sick extra episode 11 the same couch when mario got sick by Todd the mushroom and son of Queen Bell by putting flour in mario's nose and making him sick! but don't worry he got healed. and the table when Sonic got a call from Dr. Yosh in episodes 10 and extra episode 11. man that guy loves calling.
The Cave which is Mario kart wii Donkey Kong and Patricks home land which they got stuck at for 30 years. Full of lonelyness, but Mario Kart wii Donkey kong from the begining he knew since there was no way out besides the TD bank piggy bank elevator (but its only for humans) there was no way out so donkey kong made his own house and patrick has been living off of Mario kart wi donkey kongs bank money. So patrick lives in a 5 star hotel in the cave and they both been at it for 30 years fighting each other in there own adventure.