Minecraft Game of Thrones project builds a blocky Westeros
Pyke is the capital of the Iron Islands, who basically have an entire culture based around being colossal dicks. Still if you lived on a barren rock in the middle of the sea where absolutely nothing grows, you'd probably take to raiding the mainland too. Of course that doesn't excuse Theon. Nothing excuses Theon.
This build also has a time lapse video of its construction.