The bustling metropolis is not easy to get to the point Berlin is in many cities In an area as big as Munich Stuttgart and Frankfurt am Main together the Berlin experience a variety of very differentinfluenced urban neighborhoods centers and districts

Could you correct the punctuation please?
The bustling metropolis is not easy to get to the point: "Berlin is in many cities," In an area as big as Munich, Stuttgart and Frankfurt am Main together, the Berlin experience a variety of very different-influenced urban neighborhoods, centers and districts.