Named for its location in an alley southeast of the Colorado Institute of Art — though it has no official affiliation with the school — the CIA Wall serves as a rotating showcase for some of the best graffiti productions in Colorado. Legal ones, at that, although "legal" is a relative concept in the graffiti world. The owner of this property's retaining wall long ago started allowing spray-can artists to paint murals here, but if they don't have serious skills and the blessing of some specific high-ups in the local graffiti scene, they can find their hard work crossed out — or worse. This unseen but stern management keeps the artistic quality of the wall work first-rate and free from the gang graffiti and tagger crap that mars Denver's other graf yards.