The historic gunfight between the Earps and Holliday is reenacted daily at 2pm for visitors.
I know, it's weird. Especially in 100 degree heat, but a lot of people seem to go crazy for it and come from a long ways a way to see it. And all things considered maybe it's not such a bad way to learn about the wild west.
More interesting for me is the tour of CS Fly's photo gallery, famous for his portraits of Geronimo.