Create an eerie and unsettling architectural structure, designed to evoke feelings of dread and mystery. The building should appear imposing, dark, and foreboding, with sharp, angular lines that create a sense of discomfort. Towering walls loom over empty, desolate spaces, casting long, distorted shadows. Narrow, labyrinthine corridors twist and turn, making it difficult to determine which direction is safe. The structure should be built with unnatural, cold materials such as dark stone, rusted metal, or cracked concrete, giving it a decaying, abandoned feel. The atmosphere should be heavy, with thick fog or mist clinging to the ground, and dim, flickering lights that barely illuminate the surroundings. There should be an overwhelming sense of isolation and danger, as if the building itself is alive, silently observing anyone who dares to enter. The sky above is dark, overcast, and devoid of hope, adding to the feeling of being trapped in an unwelcoming, hostile environment.