Here is an article and photos about a new mall in China, entitled The world’s new largest building is four times the size of Vatican City. it makes the West Edmonton Mall look regular sized by comparison. The article states:

The New Century Global Center, which recently opened in Chendgu, China, is 328 feet high, 1,640 feet long, and 1,312 feet wide. That’s roughly 20 times the size of Sydney’s legendary Opera House, four times the size of Vatican City, and three times the size of the Pentagon. And its 420 acres in floor space is nearly the size of the entire country of Monaco (499 acres).