Pokemon Tower is a fucking borefest. 3 floors with nothing but Channelers each with the same Gastly or two. To make things worse for me the only effective move I have is Leech Life.

A lot of places in Kanto are like this. Narrow passages you must cross filled with trainers to stop you at every step. Nugget Bridge and Route 25 comes to mind.

What locations do you hate playing through the most?