Spain's MADRID XANADU, a prototype for New Jersey's MEADOWLANDS XANADU mall, opened in May 2003. At this time, MADRID XANADU enveloped 1.2 million leasable square feet and contained 218 stores and services. It was -and is- one of The Continent's largest shopping centers.
Photo from http://www.madridxanadu.com

A rendering from 2003 shows the original concept for the MEADOWLANDS XANADU mall.
Drawing from http://meadowlandsmills.com (website on Internet Archive Wayback Machine)