impossible

tea service

glasses

corner of a house

triangle

locked triangles

letter “A”

cylinder

triangles

cube

shelves

window

stairs

waterfall

blocks

stacked cubes

steps

triangle variation

a Tamas Farkas Illusion

endless circular staircase

elephant

trees

soldiers

cowboys

pencils

pencils

books

columns

window

terrace

checkerboard

ambiguity

side car