They don't make these pre-painting castle ruin walls anymore - discontinued. Luckily, I found some guy selling heaps of them on ebay, and doubled my collection cheap! Awesome! Here's some pics of the complete set now :) Ruined towns, ruined castles, crumbling dungoen room/passageways. So many ways to lay them out!
All the wall pieces now!
A big castle ruin!
A ten room overgrown 'dungeon' with gaps between 'rooms' to make passageways