One design feature that makes my video game maps unique is that they are often based on a real-world location and made to scale. Using both satellite photos and on-site photos I can re-create almost anything using Google SketchUp and in-game tools.
The following showcases images comparing reality to virtual reality.
Fan Feast – Based on a real shopping center in Austin Texas:
Alamo Drafthouse – Based on a real movie theater in Austin, TX:
Seaholm Power Plant – Based on a steam driven power plant built in the 1950's in Austin, TX.
Zion – Based on Zion's National Park in Utah