This illustration is an all-time favorite. Working in a great setting, with good people (Harebrained Schemes), with time to make everything right. This was made for a special Kickstarter backer reward.
5. Skyline Cafe from Aetherium board game.
4. Mega-space dock from Warhammer 40k.
3. Lithantu, located deep in my dreams.
2. Urban vista from Android: Netrunner.
1. Raxus Prime from Star Wars LCG.