Imagine the depth of pollution caused by empty plastic water bottle you use daily. What if you can turn the waste bottle into something beneficial and beautiful ? That is the idea behind the construction of these houses with bottle. These "Engineers", I choose to call them, filled empty bottles with sand and make something out of it. Houses were constructed with bottles and the outcome is ecstatic.
Mainly, the plastic bottles were sourced from dumpsite where they were mounted in heaps posing a great threat to the environment. The sand is readily available, so a little amount of cement is required to hold the bottles together.
See photos below.