It looks Like You Can Enter The Buildings,

by using the door or climbing through the wall, 

but it is all an illusion, they were all produced by German street artist 1010,

  using between 6 to 10 different colours on top of a dark background or centre, it makes the buildings and walls look 3D,

 He has recently applied this technique across the globe, including a mural for the Backside Gallery in Marseilles, France and a work on a large public building for this year’s POW WOW Hawaii Festival in Honolulu, 

 it seems deceptively simple, but as most things in reality it must be more than a little difficult to produce the illusion,

You can see more of his recent pieces on his Facebook and Instagram.