The Mall at the Source (also known as The Source Mall or simply The Source) is a shopping mall located in Westbury, New York, USA, on Old Country Road and Merchants Concourse (Ellison Avenue), currently managed by Newmark Grubb Knight Frank and owned by lenders. Until August 2012, the mall was managed and co-owned by Simon Property Group. It had many stores including Old Navy and currently has an H&M. It also has several upscale restaurants such as The Cheesecake Factory and P. F.