northern shell's avant-modern blue-glazed office building on london's river thames promenade.

district financial blue abstract background windows facade frame glazed building crystal reflections avantgarde architecture reflected clouds skyscrapers pyramid crystals northern shell grid geometric richard desmond repetition pattern engineering offices london united kingdom spectacular view downtown modernity reflection mirror cloudy futuristic greater glass block highrise workplace window prestige cubic office docklands skyscraper modern contemporary design high rise 39aph39 avantmodern blueglazed river thames promenade sky shard its