Of all the unique architectural elements of Boldhome, the Pockets are to me the most fascinating. Dwarf-made and carved deep into the mountain cliffs, they are an impossible combination of the facades of Petra and Markarth (in Skyrim, which I suspect were inspired by Boldhome). They are accessed by stone roads that wind up the cliffs. Temples to Orlanth and to the tribes of Sartar mark the way.
A good sources of visual inspiration for the Pockets: