An aerial shot is a shot from either a high angle (via a dolly or an elevated plane) or through the use of an attachment to a helicopter. Aerial shots are typically used as establishing shots, zoom shots, or as transitions from one scene to another. 

This shot from The Ballad of Naryama establishes the cold, desolate mountains that are the setting of the film. 

This shot from Wings of Desire showcases West Berlin. it also holds thematic and symbolic meaning as the film comes from the perspective of a lapsed angel and the camera takes on his POV in this aerial shot.