Circular Stairwell Opening Poster - Sunlit Concrete Architecture

Circular stairwell opening poster featuring a sculptural round aperture set into a pale concrete wall. This architectural illustration uses a restrained composition of curved steps, geometric recesses, and strong sunlight. The opening reveals a deep blue stairwell with visible curved walls and steps. A diagonal shadow falls across the left wall, while two narrow recesses and a seam establish scale; a slim burnt-orange strip borders the right edge. Physical, unframed print in A5, A4 or A3. Frames and styling accessories shown in mockups are not included.