In 2014, Hiroshi Sugimoto was invited to create a site-specific work as part of the Tuscan winery Castello di Ama’s ongoing arts project. The piece he created, Confession of Zero, explores what he calls the “presence of absence,” in a video about the project. Installed in an 18th century chapel, Sugimoto created a mathematical model in two parts— a lower half and an upper piece, suspended in the air. “Using stainless steel, I was able to craft a shape that tapers to a point of just 0.8 millimeters wide. The zero point is about one centimeter beyond that,” Sugimoto writes.