Difficult choice again...

I know we can only choose one, but my top 3 would be:

1/ A Glass Tower - by atpollard: nice work and good idea of recycling a part of an existing building, also many details.
2/ Arcology of the Naelii - by LindaJeanne: good concept and realisation.
3/ Golgath Caverns - by Jaxilon: nice artwork.

The others have also many good points, but were lacking some features I would expected, for example an overall view or some other graphic elements (title, legend, background, etc.). I just realise now that I didn't put any legend... arf...

Great work everyone!