Foreigners often make some strange mistakes in Chinese when they study the most difficult language--- ---Chinese. We try to analyze typical sentences to correct these errors.

         Qù ɡōnɡyuán zài zěnme dìfɑnɡ huàn 1 lù ɡōnɡjiāochē?
False: 去公园在怎么地方换1路公交车?
         Qù ɡōnɡyuán zài shénme dìfɑnɡ huàn 1 lù ɡōnɡjiāochē?
True: 去公园在什么地方换1路公交车?

“怎么”用来询问方式、状况、原因等。原句是问换车的地方,应当删去“怎么”,改用“什么”。
怎么 is a word for asking manner, state, reason,etc. The sentence is a question of where to change a bus. Erase 怎么 and use 什么.