Deep in the Central Asian Steppe, perhaps the most heavily bombed spot on earth
After seeing what's left of the Aral Sea, in the West of Kazakhstan, the No Holidaymaker will be eager to continue by taxi or rental car to the remote town of Kurchatov, once so secret it was not even on the maps. The explanation for that is nearby: the Semipalatinsk Test Site, where Stalin tested his first nuclear bomb.
And he liked it so much that he tried out another four hundred or so more on that same spot, making the Semipalatinsk test range one of the most radioactive spots on earth. Even so, there are no fences or warning signs announcing that you have arrived. The windswept grasses of the steppe look much the same, if amongst them are ruined concrete bunkers and twisted remains of observation towers. It is only at closer inspection that the melted rock can be seen to have been splashed here and there onto the steel and concrete, where it cooled, forming a dark lacquer. 
And don't miss the unusual rock collection: marble-sized balls of soil turned into glass, which crunch underfoot.
As part of the experiments, tanks, aircraft and artillery pieces were bombed. The highly radioactive remnants were never cleaned up. Yet now they have disappeared, adopting a new life innocuously (but lethally) as scrap metal. Likewise, cattle and sheep are free to roam the radioactive plains, and the meat and milk find their way to the local markets.
The land itself is “still hot” and even reckless visitors should take a Geiger counter and avoid touching any rocks.