The Door to Hell
This natural gas crater field has been burning non-stop since 1971. This is probably how hell looks like! The crater, which is located in Derweze, Turkmenistan, expands to 5,350 square meters. Think of the size of a football field in the US! After the field collapsed, it was set on fire to stop methane gas from spreading. No matter how scary this may look, thousands of tourists visit this area, so you may want to add on the list too.