st louis gateway arch against blue sky, black silhouetted building with balcony in foreground

abstract apartments arch architect architectural architecture background boxes brick bright build building buildings business businesses city classical clouds condos construction corporate curve design downtown exterior famous finance french gateway geometric glass high historic landmark lifestyle light lines living loft lofts looking louis material modern modular monument office offices older panels preservation refelcting reflecting reflective residence residential scroll shadow shape shapes skyscraper space squares stainless steel stone structures style sun sunshine symmetrical tall towering urban warehouse white windows working