It is just a square... nothing special, many peopl...

It is just a square... nothing special, many people, many cars, many stores, and many constructions as well. But good for parking your car under union square and rent a bike for looking around. Pier 39 is not far from here, taking less than 15 minutes from here. If you dont want uphill and downhill with your bike, go to pier1 from union square and then there is nice bike route from pier1 to pier39.