Series 10 of "Doctor Who" is almost upon us, and to help promote the show's return to TV, its makers have commissioned a very special piece of anamorphic street art on London's South Bank —— one that creates the illusion that various monsters from upcoming episodes are literally rising up out of a rift in the Earth itself! Artist Joe Hill explained how he crafted the amazing artwork, and revealed the hidden image of Peter Capaldi's Doctor lurking in its clouds, with showrunner Steven Moffat in short video posted on the official "Doctor Who" Twitter account.

Apparently, the artistic feat took 10 days, and a dry run in the studio, to physically complete, but the result really does give the impression that the viewer is standing on the precipice of a rift in space-time

Later, Capaldi and his co-star Pearl Mackie, who plays the incoming companion Bill Potts, arrived on the scene, with Mackie dangling herself precariously on the rift's edge for the cameras.

For a limited time, visitors to London were even able to take their own selfies in front of the artwork before it, like the Tardis, is scheduled to fade from public view.

Of course, this isn't the Time Lord's first brush with street art – in the series 8 episode "Flatline," the Doctor and his then-companion Clara Oswald (Jenna Coleman) were confronted by a group of two-dimensional creatures leeching dimensional energy out the Tardis. Hopefully, this time the dimension-tricking artwork only seems like the herald of an alien invasion...

Starring Peter Capaldi as the Doctor, Pearl Mackie as Bill Potts and Matt Lucas as Nardole, “Doctor Who” returns to BBC One and BBC America on Saturday, April 15.