fragment of light-transmitting ceiling with built-in windows in industrial, public or administrative building. ceiling of square

glass ceiling modern design interior lighting architecture blue structure construction building light indoor hitech roof urban steel transparent window office vertical filamentous blinds filiform threadlike metal inside geometric cell hall frame futuristic technology detail dome grid industrial bright house panel rooftop square exterior housetop alternative edges engineering durable fragment light-transmitting built- windows public administrative building cells blinds close-up