These are the creation of Horst Kiechle, an Austrailian architect know for his "archisculptures," that he crafts out of card paper models that are a cross between architecture and sculpture.
The torso, created entirely out of card paper, has removable organs and was made for the Science Lab of the International School Nadi, Fiji.
Empty Torso
Paper Heart
Parts
For more pictures, visit Horst Kiechle's Flicr Pool
via Boing Boing
