An exhibition involving 50-plus UBPA cases' displays opened at the Expo Center Wednesday afternoon, which will run until June 29.
The showcase features photos and description about the cases.
The area covering only five percent of the Expo site now attracts about 23 to 30 percent of the Expo visitor flow every day, a rise from 10 percent before the policy was initiated.
Vicente Gonzalez Loscertales, secretary-general of BIE, has visited UBPA for several time and praised the area.