Still working on the Red Keep. It's on a 60x60 lot so I've got my work cut out for me.
I've completed the Throne Room (I'm using the Baratheon layout over Joffrey's makeover, BTW),

and the Small Council chamber (which I put in the same building as the Throne Room, to save space),

and in Maegor's Holdfast I completed Cersei's bedroom and Joffrey's, too.

It's got the drawbridge and everything, and a small basement area beneath the moat.

Next I have to do the Tower of the Hand, then I have to do the White Sword Tower, make Lord Varys' room, the kitchens and such, and then it's just landscaping, and then I'll be done! :)