Last week Vitra and Carl Hansen & Son joined up to celebrate the opening of their new and expanded Culver City showrooms at 8745 and 8753 Washington Boulevard. Vitra's gallery, encompassing two floors enlarged to 3,550 square feet by Tiziano Barachino and Oakes Architects, is based on the firm's concept of "Citizen Office," in which free-flowing workspaces and information are available everywhere. The space contains several workstations as well as formal and informal meeting spaces and lounges.Carl Hansen & Son's 2,800 square foot showroom, located inside the Helms Bakery, houses the company's Danish classics inside a unified space. Surfaces include stainless steel and natural wood walls, and exposed bow-truss beams, and large storefront windows. Furniture includes work by Hans J. Wegner, Kaare Klint, Ole Wanscher, and Tadao Ando.