Since the 1960s the nuclear powers are aiming intercontinental missiles at each other. At the Titan Missile Museum in Arizona you can have a look at one of them.
Albania’s dictator Hoxha ordered the construction of 750,000 bunkers to protect the country. About 170,000 were built. Most are still in place and rotting away.
If you ever wanted to start a Total Nuclear War from an actual launch console 30 meters below ground – in this museum you can 😉