where did romeo and juliet take place

The main action of Romeo and Juliet takes place in the city of Verona, Italy.

A smaller but important part of the story happens in Mantua , another Italian city, where Romeo is exiled and where he later hears the false news of Juliet’s death.

So, in short: the play is set primarily in Verona, with some scenes in Mantua, both in northern Italy.