Impossible sculptures

Artist's Flickr photostream http://www.flickr.com/photos/erik_minnema/

Images were found at

• http://www.flickr.com/photos/erik_minnema/4627428426/
• http://www.flickr.com/photos/erik_minnema/4626821649/
• http://www.flickr.com/photos/erik_minnema/4626835893/
• http://www.flickr.com/photos/erik_minnema/3308876734/
• http://www.flickr.com/photos/erik_minnema/4627286126/
• http://www.flickr.com/photos/erik_minnema/4428877401/