I've not spent as much time as some incredibly creative sorts who have constructed some truly impressive structures. Instead, I just took the time to learn a bit about the mechanics and attempt a pleasing aesthetic to start.
The Farnsworth House is an architectural favourite of mine. It is near Chicago in the States and designed by Ludwig Mies van der Rohe, and built in the late 1940's. I've not the time to change the composition (and colour) to the more appropriate white since the updates.