In the photos below the roof and lattice truss on the hangar has been balanced on top of a Parmesan cheese tub.
This shot looks bad in colour, but quite good in B&W:
Now I need to paint and assemble the pipe bridge in the background, and once I have everything I need, fully assemble the hangar and paint it a whitish colour. It also looks like I need to get some glaziers in to do the castle windows! Then the coastguard buildings on top of the castle will be built along with the quick firing guns before being painted.
An alternative (i.e more stable) radar tower? Spot the RTPlonk product!