We were wanting to take our 4yr old son to the next level in toys. I know that it states on the box 7-12yr olds.
However, our son, we feel is quite advanced for duplo. When he saw that he could build a country house and also make 2 other cabins with it, he was DELIGHTED. Obviously he wasn't able to build it himself, so I had fun building it and the other 2 designs over and over again.
Once it's built, my son plays with it for hours. Now, he would like more lego houses/sets to add to it.