Oldboy is a totally bananas Korean revenge film with very calculated production design by Seong-hie Ryu. The main character exists in a smothering, confusing world of decay. He moves from set to set, each with it's own excruciating kaleidoscope of colors and patterns.
All of these sets are in stark contrast to the home of the villain. He lives in a symmetrical, modern penthouse with iridescence green ponds and bachelor pad contraptions.