Black and white spiral staircase with textured and twisted pattern in the Leaning Tower of Pisa, Tuscany, Italy

Intricate spiral staircase crafted from smooth, durable stone, showcasing distinct, weathered surfaces. The tight, curved steps form a circular pattern around a central column, creating a dynamic, twisting effect. Varied shades of gray highlight the natural texture and veining of the stone, emphasizing depth and movement. The precise masonry reflects historical architectural techniques, capturing a sense of timeless elegance and structural ingenuity.