When you approach the Coliseum you are greeted by a few "Roman guards" dressed in traditional costumes. It adds a bit of fun to the experiance. You can purchase some goodies from the street vendors around the area. Once you get in the coliseum its self guided but the lines can be long to get in. You can walk all the way around and they have a bit of an example of what the floor would have looked like, but its only a replica. You can't go down onto it but you can look into the bottom of the floor and see all the hallways and where they kept all the animals.