US based architecture, construction and development firm ‘The Beck Group’ created this interesting Op Art play house for children for a Giving Gala 2011 charity event in Dallas, Texas (USA).  The “design concept was motivated by a big zebra in the green grassland”.  The play house was constructed using plywood 4″ insulation foam which was cut by a CNC machine.

Thanks to Nathalie for pointing this one out to me.