Shipping containers are in many ways an ideal building material. They are strong and resistant to the elements while also being durable and stackable. Structures made from them can be disassembled, moved, and then reassembled again.The USA imports much more manufactured goods than it exports and those goods come and go in containers. As a result that country has more empty containers than it can fill and these empties are often made available for uses such as architecture...
some links on the right column.