The Alfredo Santa Cruz family in Puerto Iguazu has created a home that would make any environmentalist dizzy with excitement. The family's Casa Ecologica de Botellas Plasticas, or La Casa de Botellas, is built out of thousands of PET plastic water bottles.

With walls, beds, tables and even a garden made of plastic bottles, as well as a Tetra pack roof, the portable La Casa de Botellas is eco-tastic. And if you're wondering how the Santa Cruz family created such a structure, they create their own casting technology to keep the bottles fused together.