Las Vegas is not normally the place that one goes to visit a museum, but the one described in this Opinion Journal piece appears to be worth checking out during a respite from the blackjack tables:

Over . . . 40 years, 928 nuclear devices were exploded at [the Nevada Test Site, 65 miles northwest of Las Vegas] — although atmospheric blasts eventually gave way to underground testing.
The fascinating, often surprising, story of the site’s four-decade history is the subject of the new Atomic Testing Museum (www.ntshf.org), not far from the Las Vegas Strip, a place where levity and holocaust often go hand-in-hand. In the museum gift shop, for example, I picked up a postcard. “Greetings from the Nevada Test Site,” it proclaimed, showing a collage of doomsday clouds floating above a scraggly desert. I half expected to see a postmark from hell.