Farmer Trent's Flying Saucer - On May farmer Paul Trent of McMinnville, Oregon snapped two photos of an object that he claimed was a flying saucer (the term "UFO" hadn't been invented yet). This is known as the Trent Photo
doesn't really look like a dragon to me. It is a terrifying image though so I can see why the Vikings included images of dragons on the front of their ships. It was a way to intimidate their opponents.
The Nazca Lines / A series of ancient geoglyphs located in the Nazca Desert in southern Peru. Etched into a high plateau in Peru’s Nazca Desert, a series of ancient designs stretching more than 50 miles has baffled archaeologists for decades.