Very interesting, one of the images [1] gives some good blue prints for the geek's version of a sand castle. [1]: https://upload.wikimedia.org/wikipedia/common

Very interesting, one of the images [1] gives some good blue prints for the geek's version of a sand castle. [1]: https://upload.wikimedia.org/wikipedia/commons/thumb/d/d7/Flakturm-Bauarten.png/300px-Flakturm-Bauarten.png https://upload.wikimedia.org/wikipedia/commons/thumb/d/d7/Fl...