"My son really enjoys playing with the LEGO cars and buildings that I have in my collection. He especially likes opening and closing the windows/doors on things to put people through while acting out his stories. We decided to expand our collection of "small" houses by getting the new modular style sets (3 of them). The idea of the modular seems good, but the playability is low. They just keep falling apart. Opening a front door causes the entire porch to come off. If you try to move the buildings they collapse! This drives my wife nuts! We now avoid buying anything that is of this line of "modular" build style [still going to buy the Expert Modulars ;) ]. The buildings look good and would be fun to play with if only they stayed together. The modules need to lock in place at the tops."