It's a pretty random question, but for some reason I am curious as to what the answers will be. What is your least favorite area in a pokemon game?  It can be a dungeon a route, a gym, a city... heck, it could be as specific as a certain patch of grass or whatever. It can be in any pokemon game at all. It's a pretty simple question. You can hate it for any reason at all. You can also list multiple hated areas if you want.

My least favorites are:
-Pokemon Mansion: So many encounters and such an annoying puzzle. And you have no idea how large of a tantrum I threw when I found out that the red carpet door at the near end of the dungeon sent me back to the beginning. Without repels, I wouldn't be able to keep my sanity.
-Whirl Islands: I had a pretty bad experience there when I forgot to bring Flash. 
-Seafoam Islands: ANNOYING STUPID STRENGTH PUZZLES, and overall extremely tedious. 

Note: I did a search, and I didn't find this post anywhere. If there is already a thread on this subject, please show me the link. Thank you.