This hypnotic black-and-white photograph captures a spectacular detail within Casa Amatller, the iconic Modernista building in Barcelona. The image is a stunning, abstract close-up of a window made entirely of small, repeating circular panes of glass (roundels). Held within a dark, rigid grid, the pattern creates a mesmerising rhythm of light and shape. The monochromatic contrast highlights the subtle texture of the handmade glass, transforming the window into a dramatic piece of architectural art. It beautifully showcases the Modernista commitment to decorative craftsmanship and the use of light as a defining, textured element in the home.