You know that Christian is a big fan of Lego Technic. The last couple of Christmases he received Legos. This past Christmas, Christian received the Mobile Crane. They claimed that it is the largest and most complex Lego Technic to date. Perfect for Christian!
He started building back in the beginning of February.
This was the mess/condition that part of our house was in at the time.
Christian finally finished the crane at the beginning of June!
He was quite happy and this crane does a ton of stuff. It is really crazy how many moving parts are in this. Here is a link to a little video of Christian showing some of the functions.