Just look at this lovely painting of the Citadel on Gallifrey, the home planet of the Time Lords on the BBC's time-travel saga Doctor Who. It makes me feel the sadness of Gallifrey's destruction more than a dozen sad speeches from star David Tennant. It's part of a motherlode of Who season three concept art that the BBC has put up on the show's official site — and as is often the case, the concept art looks way cooler than what ended up on screen, just because the artists could let their imaginations run wild. Below the jump, our favorites, including a Dalek tommy gun, some killer spaceships, and a more imposing version of "Utopia"'s Futurekind.

All images are copyright BBC and the designers, of course. [Doctor Who concept art gallery]