Dasht-e Lut, Iran
Here it is: the hottest place on Earth. Iran's Lut Desert, an area so parched and desolate that no one is around to regularly monitor temperatures. (What a dreadful job that would be.)
Though maintaining a weather station is impractical in the Lut, a NASA satellite equipped with a moderate resolution imaging spectroradiometer (MODIS) was able to measure temperatures here from space, during a seven-year study. In five of those years — 2004, 2005, 2006, 2007, and 2009 — the hottest spot on Earth could be found in the Lut. In 2005, a temperature of 159.3 degrees Fahrenheit was measured, the highest reading ever officially confirmed for a location on Earth.