The idea of this building started with a single part, the green crane support stands. I wanted to make a large building with an exo-skelaton. It took about 7 months to construct, somewhere in the neighborhood of 35,000 bricks!! It was originally going to be a single column building but, once you start you can't stop. The idea of a bridge connecting 2 towers came along. So why stop there? I just had to make 4 towers with a bridge connecting them all! The building comes apart in 13 separate modules for easy transport to LEGO shows.