Earth has Bullseye ~ This prominent circular feature, known as the Richat Structure, in the Sahara desert of Mauritania is often noted by astronauts because it forms a conspicuous bull's-eye on the otherwise rather featureless expanse of the desert.
Hells Door It is situated near the small town of Darvaz in Turkmenistan. A few years ago, geologists were drilling for gas when then encountered a very large cavern underground filled with a poisonous gas.
Pillars of Creation - Taken in 1995 by Hubble Telescope, forming in Eagle Nebula light years away. And it's about 4 light years tall! Personally, one of the most beautiful, inspiring and fascinating images I've ever seen :).