What goes up but never comes down? An Impossible Staircase – Paradox Architecture in LEGO Bricks, the brain-bending LEGO® Ideas project from builder BrickRelativity. This build takes the dizzying optical worlds of M.C. Escher and makes them tangible, with staircases climbing in every direction and a sense of up-and-down that flips depending on where you stand.

Roughly 4,300 pieces come together here, sitting on a base measuring 27 by 33 centimeters and reaching 35 centimeters tall. The genius lives in the angles. Walk around it and the whole structure rearranges itself in your mind, looking perfectly coherent one second and gloriously impossible the next. (Your eyes will argue with your brain, and honestly, both are right.)

The color palette stays neutral and clean, inspired by the LEGO® Architecture line, with sneaky little details that nod to the classic castle sets BrickRelativity received as childhood Christmas gifts. Cleverly placed minifigures walk the steps in different orientations, acting as tiny tour guides that point out exactly where the perspective bends. How do you tell which way is down when three figures all insist they are standing upright?

The project sits at 1,379 supporters with 265 comments, and it deserves every bit of that buzz on its march toward 10,000. BrickRelativity credits his brother, Mino80, for the renders and presentation, making this a true family affair built on art, illusion, and a love of construction.

So head over to LEGO® Ideas and add your support to the Impossible Staircase – Paradox Architecture in LEGO Bricks. After all, the only thing harder than building an impossible staircase is walking away from one this fantastic.