There's a wonderful trompe l'oeil mural tucked under an overpass on Broadway near Orange Street.
The painting cleverly makes it appear as if the concrete wall has cracked away to reveal another wall of bricks which in turn reveals a a plaster wall which then exposes wood framing and a gray masonry wall. Along the way, little things are revealed...a border of delicate blue and white Dutch tiles, an empty bottle of light green glass perched on a jutting brick, a pair of antique books, and the pair of old-fashioned spectacles show above.
It's the work of Albany Mural, a company whose illusionist art appears throughout downtown Albany...including the Maiden Lane pedestrian bridge and the facade of the Albany Public Library's main branch.
For more on Albany Mural, take a look at their site.