Went to see the London Mastaba the other day. I liked it, you should make the effort to go. It's dead easy, you can just walk past.
It's on until Sunday 23 September and then they will probably spend a week taking it down which I imagine will be fun to look at. The pictures of it going up were good.
Picture taken by Matt Brown used under Attribution 2.0 Generic (CC BY 2.0)