These were created by photographer Robert Jahns and his terrifyingly amazing Photoshop skills
He uses photos from other popular Instagram accounts and edits them himself
He also collaborates with other photographers
Jahn features roller coasters in his works often
He incorporates many different city skylines into his work
Including New York, Paris, Chicago and Hong Kong
Check out more of Robert's amazing work on his Instagram profile, http://instagram.com/nois7