Concrete Wabi Sabi: Virgin tetrapods
I like this photo because without any scale reference, one could be looking at something architectural, a stadium maybe.But in fact, it's just a line of new tetrapods waiting to go in place to "protect" the riverbank.
New concrete can have an aesthetic quality, in my opinion.
There are tetrapod production sites all over the place. Mostly they are made in situ, you just need the molds and a constant stream of cement trucks.
I haven't been able to find the numbers, but I'm willing to bet that Japan leads the world in the number of cement trucks per capita.