In Abrantes, Portugal, the sculpture plays a crucial role to people passing by in the town’s most central square. Its golden geometrical surfaces reflect light onto the surrounding facades of Praça Raimundo José Soares Mendes. An invasion of changeful light effects is created by the combination of the sun’s changing angel of incidence, the rotation of the irregular solids and the people’s interaction. It results in an unexpected light show that varies the everyday appearance of Abrantes. Hence, Karat reveilles curiosity, spurs people’s will to intervene with their everyday ambient that often gets buried in oblivion.