mysterious structures

LiDAR technology has revealed a cluster of great structures including a 25m high pyramid in the middle of the Mexican jungle, belonging to a Mayan city that has been lost for 1,000

Google Earth images taken from satellites, airplanes, and balloons reveal strange places on Earth that can only be seen from space.

Hundreds of mysterious structures built on Earth more than two thousand years ago have been discovered in the Amazon rainforest.

The hypothetical alien that once visited Mars was given after strange structures were found on the Red planet.