Thoughts on vtv's backgrounds are maps like this
Example
http://www.vanillatf2.org/
http://www.vanillatf2.org/wp-content/backgrounds/snakewater_1.jpg
http://www.vanillatf2.org/wp-content/backgrounds/vtf2-grana_pro-spawn.jpg
http://www.vanillatf2.org/wp-content/backgrounds/vtf2_bg_obs_middle.jpg