Not a skyscraper or abandoned by any means (developers are adding 200,000m^2 of additional space), but the New South China Mall is an unbelievably huge and empty structure that opened in 2005 and has been 99% vacant ever since. It is also the world's largest mall by total leasable area.
Images from Remko Tanis's Flickr account.
![](http://farm2.static.flickr.com/1357/5126814359_911e9c5ae8_b.jpg"]http://farm2.static.flickr.com/1357/5126814359_911e9c5ae8_b.jpg)
You can read some inane babbling on the official website, which calls the opening of a KFC an "eruptive vent of wealth:"
http://www.southchinamall.com.cn/english/pop.jsp?id=534