3D Schröder Staircase
Why the open web links it
Demonstrates a 3D optical illusion where a staircase appears to change orientation, challenging perception of depth and geometry.
Linked by 15 independent sites, 2 of them widely read in the 2026-10 crawl of the open web, including cnnbrasil.com.br, meiji.ac.jp, fakulteti.mk, apprendre-en-ligne.net, illusionoftheyear.com.