I was on vacation in London for the past week, and I got this set at the Lego store in Leicester Square while there. I can safely say that this has got to be one of my favorite Architecture sets that I've built (I haven't built too many, but still...). Lots of different building techniques were used in this massive set, and the little doors in the back allowing access to the paintings in the National Gallery is a nice touch. The Routemasters and Black Cabs returning from the Buckingham Palace set helps this set fit in with the other London sets. They even put blank spaces where there are elevators... ahem, I mean lifts, in the real space, something that went unnoticed by my parents when trying to get a stroller down to where the fountains are; good job designers!