Abandoned prison corridor and staircase from the Eastern State Penitentiary in Philadelphia, Pennsylvania (USA). Variant of this image digitally manipulated with a grungy acrylic paint texture.
Special thanks to artist Lara Mukahirn for hand painting the acrylic texture elements as a personal commission, and granting me permission to publish this resulting image. Feel free to click her name to visit more of her wonderful images from deviantART.