If you’ve ever wondered what it would be like to have your finger on the button of a nuclear missile, here’s your opportunity to find out. This deactivated intercontinental ballistic missile (ICBM) silo, called the Copper Penny, is now a museum—and is the only museum in the country that allows visitors to descend into a former missile silo. There’s a huge Titan missile on display, and, even without its nuclear warhead, it is a terrifying sight. The guided tours do a great job of explaining not only the ICBM system, but also what life was like for the people who worked here. Operated by the Pima Air & Space Museum, this museum is located 25 miles south of Tucson near the community of Green Valley. On the first and third Saturday of each month, there are Beyond the Blast Door tours, which take visitors into areas not on the normal tour. You can even spend the night in the silo; inquire at the Museum for details.