I traveled to France as a teenager. One of the sites that I was able to witness was a mosaic house. This house was built with tiny shards of broken glass, but was considered a great work of art. The lot in Potsdam reminds me a bit of that house. Regardless of how some people view this lot, I believe it is an ingenious idea, and those toilets could just be sitting in a landfill somewhere. Who knows? Maybe one day it will become a tourist attraction like that house in France.