The Titan Missile Museum in Sahuarita, Ariz., is the only publicly accessible Titan II missile silo in the United States. Visitors to this unique museum experience a simulated launch in the command center, walk through 3-ton blast doors, tour the underground missile site and see an actual Titan II missile in the launch duct. The 110-foot-tall missile is harmless now, but weighed 170 tons when it was fueled and ready to launch.