彭罗斯不可能三角结构

The Penrose impossible triangle built as a real concrete structure, aerial view, an architect standing on it casting a real shadow, extreme photorealism, no trace of digital manipulation.

由真实混凝土构建的彭罗斯不可能三角，空中视角，一位建筑师站在上面并投下真实的阴影，极致的写实感，无任何数字处理痕迹。