Soldier's fort (a.k.a. "three and ten") standard

A modular building standard for Pirate-themed creations was introduced in 2009. This simple building style allows the fort's components - the tower, shack, bridge, and jail - to be rearranged in different configurations. It also allows fans to build their own modules to expand the fort, much like the classic LEGO Castle sets. In this article Nelson examines the building style and provides some examples of modules you can build.