Located on Merritt Island, Florida. Commercial space craft (Elon Musk's SpaceX and Jeff Bezos' Blue Origin) operate from the area but this is the publicly available space to see. Home to one of the three remaining space shuttles (Atlantis) in the NASA program that entered space. There are many exhibits to see so a half-day visit is a push. Plan on a whole day for the full experience. There are shuttle buses to take visitors from different areas of the facility. If you have launch viewing tickets for a Space X / Blue Falcon launch, the rules are different, so check the details of your ticket.
