"Bought this for a birthday gift from the whole family for my 13 year old daughter .She built it over 2 days ..14 and a half hours in total. Very easy to build but some parts are fiddly. However some bricks were slightly bents in the packets and do not sit flat once built. Even with the whole weight of the castle this has not sorted out the problem. Apart from that its ok. Not very easy to play with as there is not a lot of room for your hand to fit inside so tiny bits keep pinging off. I have put a battery opetated tea light in the great hall at night yo show off the stain glass windows."