Istanbul has several ultra modern shopping malls that don't exist even in Europe. These are modern shopping centers containing many international and local brand names, movie theaters, food courts and other facilities.
Istinye Park shopping center was opened in September 2007 with around 300 shops. Another big mall, Capacity, is opened in December in Bakirkoy district. Another opening in December 2007 is The City's in Nisantasi neighborhood.
So, you can not only find history and culture in Istanbul, but lots of shopping opportunities as well.