We've just had Death Road, now let's look at Death Valley! Often cited as the hottest place on earth, Death Valley National Park in California and Nevada records the most consistent high temperatures in the world, so we think it deserves the title. If 134 degrees Fahrenheit sounds good to you, by all means, get yourself over there for some hiking - just remember to take plenty of water.
We're not joking about the water either. Due to the extreme weather, humans can only survive for about 14 hours there without any fluids. You might be thinking about taking a trip during winter instead, but the temperature goes pretty much in the opposite direction then and it can be freezing. Don't forget that sudden flooding can occur in the valley, making it a literal death trap for anyone unfortunate enough to be there at the time.