A cleaner works at a polka dot covered lift lobby, part of an installation by Japanese artist Kusama,...
A cleaner works at a polka dot covered lift lobby, part of an installation by Japanese artist Yayoi Kusama, at Sotheby's newly opened gallery in Hong Kong May 18, 2012. The auction house unveiled its new 15,000-square-feet gallery on Friday to significantly expand its business in Asia beyond its traditional twice-annual series of auctions in April and October, according to Sotheby's press release. REUTERS/Bobby Yip (CHINA - Tags: BUSINESS)