Castle Black with Stables, Dungeon etc
I used practically every Lego we owned at this point to create a 2 story castle complete with winch controlled gate, a drawbridge that flips up for easier storage, internal area for meals, a throne, guards' bridge around the top for keeping watch, 2 sets of stairs and a red carpet for the King to walk on to his throne.
The stable has 4 stalls with an arched door tall enough for a manned horse to walk under, workbench, common eating area, fireplace, water trough, and a sturdy hitching post.
The external dungeon is supposed to be buried deep below the castle. It has a massive swinging door that leads into 2 cells with separate doors.
The jousting lists have plenty of extra lance storage and a place to post the colors on either side of the lists.
There are other buildings such as the witches cottage, the inn and another guards tower that I may post later.