@tomasCZE 8 October 2021 more from that month

Few days ago I saw nice sun reflection on one of the Prague Czech Technical University buildings. It is modern building of CIIRC (Czech Institute of Informatics, Robotics and Cybernetics - https://en.m.wikipedia.org/wiki/Czech_Institute_of_Informatics,_Robotics_and_Cybernetics It was build between 2013-2017. It is almost standard building but around it there is special isolation foil. Here you can find more photos of building (sorry text is in Czech language): https://www.archspace.cz/ciirc