EntityQ2086896· pop 30· linked from 177 articlesgravity hillSign in to saveplace where the layout of the surrounding land produces an optical illusion, making a slight downhill slope appear to be an uphill slopeConnectionsgravityEntityInternational Standard Book NumberEntityNew BrunswickEntityhorizonEntitydigital object identifierEntitymagnetismEntitysupernaturalEntityillusionEntityQ180686EntityMonctonEntitycycle sportEntityperpendicularityEntityUniversity of PaduaEntityoptical illusionEntityop artEntitytrompe-l'œilEntityambigramEntityPenrose triangleEntityUniversity of PaviaEntityQ22908627EntityCategoriesGravity hills