One will need to focus hard and look multiple times to realize that this mural is just a mural and not an ever-lengthening tunnel system on the side of a building.

French street artist Astro is out with an interesting 3D piece completed as part of the Loures Art Publica project in Loures, Portugal. Astro is renowned more for his intense use of calligraphy in his works but this wildly different mural is just as flashy. The piece is adorned with a hieroglyphic-like floral patterns that center in on a 3D illusion made effective with shadows to create tunnels and voids. It’s like a gateway to another dimension.

Check it out below and find more of his work on Instagram.