What is the setting of The Complete Plays by Aristophanes?

Most of Aristophanes' plays take place in Athens, though with a few notable exemptions. Birds takes place outside of Athens and Peace largely takes place in heaven. Frogs mostly takes place in Hades. It is not surprising that most of the plays would use, roughly contemporaneous, Athens as the setting given that Old Comedy is chiefly an art form used for topical political and social satire. Indeed, it is so topical that it is often hard to understand what is going on in the plays without a detailed knowledge of Athenian history around the time of the play.