unique structure at concourse of london king cross railway station against the brick brown building

arches architect arup beehive blue built cascades circular colorful colour colourful colours complex concourse construction contemporary crisscrossing cross departures design diagonal diagrid elegant engineered engineering expanded extravaganzas funnel glass grid ground half hall highlight hub illuminated illumination improved iron john king light london massive mcaslan metres modern network new panels piers purple radius rail railway redevelopment roof semi shape single span spectacle spirit station steel structure stylish swoops tall texture train transport triangular tube unique victorian vinci violet waterfall white