File:พระลักแล Phra Lak Lae Wat Hiranyawat 02.jpg|Different angles of
Phra Lak Lae, a hollow-face
Buddharupa in ,
Thailand Image:Bjorn Borg Hollow Face.jpg|This face of
Björn Borg appears convex (pushed out), but is actually concave (pushed in). Image:HollowfaceillusionBarcelona.JPG|An example of the hollow-face illusion outside of a bank on the Paseo de Gracia in the
Ensanche district of
Barcelona File:Snow Face 8496.jpg|Hollow-face in snow Image:Hollow dragon front.jpg|An optical illusion. A paper dragon shown from four angles across the 90 degree effective viewing area Image:Hollow dragon back.jpg|The back of the paper dragon ==See also==