When transparent facade elements deliberately evolve from the course of the sun, we can explore a fascinating slow movement in stark contrast to the hectic urban street life on the ground. Especially the French designer Pierre Brault has responded to the accelerated rhythm of our society with facade installations that combine the principle of the sundial with colorful pop design. His three-dimensional works made of recycled colored plexiglass mesmerize through simple but dramatic movements of colored shadows. In the interview, Brault explains his inspiration, the experimental approach and his interest in working responsibly with material.