It's interesting to compare this video posted at VideoSift, with one at Harper's Bazaar which reports that Barbra Streisand has done the same thing in her basement as a way to sort and store her things:
Like everything on her estate, the shops grew out of years of careful research. On a trip to the legendary decorative-arts museum Winterthur in Delaware, she was fascinated by a series of early-19th-century shops created by curators to display their collections. "Seeing Winterthur's indoor street, I thought how ingenious that was," she remembers. "Instead of just storing my things in the basement, I can make a street of shops and display them."