Impossible Figure: 2008-12-12

With one of the Belt figures I got a comment that it looks like my curves have the smoothing turned off by mistake. I keep the shading this way on purpose because I want the different surfaces to be really defined, and not smoothed into a gradient. I do leave out the lines where there are curves though.

Building
2008-12-12

Linework | Fillwork

There is a wide roof and a deep floor, but at the same time all the walls are connected horizontally.