The 17,760-square-foot space, phase two of a plan to build the world's largest accessories hall by 2018, is all about the windows, which stretch from floor to ceiling and run along Duke Street and around the corner to Oxford Street. The 20-foot-high windows are so high that shoppers can see the sky and the hubbub on Oxford Street as they browse the Dior and Louis Vuitton spaces or dip into the luxury accessories bazaar at the center of the room; a central area which offers a mix of handbags, jewelry and other gift items. "The boundaries are blurring between the street, the windows and the retail space," said Sebastian Manes, buying and merchandising director. "We've never had windows like this before, and it's so much brighter. You can see the sky — and you can walk in the windows.".  The space, with its white terrazzo floors, classical columns and warm lighting, is part of a three-phase accessories hall project set to be completed in the late spring of 2018. Once finished, the accessories hall will span 60,000 square feet, and make up one-third of Selfridges' ground floor, and one-tenth of the 600,000-square-foot Oxford Street flagship.