The Batman Symbol
Located in Osaka, Japan, this Bat Symbol was actually intentionally placed a long time ago. It wasn't necessarily for Google Earth, but it does seem like it's that way. If you want to look at this yourself, the coordinates for this one are 26.357896, 127.783809.
Enormous Colorful Spring
Located in Yellowstone National Park in Wyoming, USA, this hot spring is extremely colorful for a deadly reason. This spring is full of toxic algae and the water has an extremely high PH level. Needless to say, you shouldn't be swimming in it. Coordinates – 4.525049, -110.83819.