Zdeněk Sýkora’s ventilation tower and paintings. Sort of reminds me of the monumental game HT Gold. The Guardian:
His collaboration with the mathematician Jaroslav Blazek led to his first computer-assisted works, which explored different combinations of abstract elements in accordance with predetermined rules. While they have a passing similarity to Op art in western Europe and America, their rigorous mathematical method was unique to Sykora.
Read more here and check related works at the Prosthetic Knowledge picks. Pictures taken from, uh, Google and Wikipedia.