The large commercial complexes, high class department stores and casual familiar local malls in many shapes and form in Tokyo area.
Roppongi Hills which has built to revitalize the town are representative example of commercial complex that large enough that it could be one of the cities itself. Omotesando Hills which caught great attention for the building structure, that has made in slope inside the building same angle as the ground, and has same height of roadside tree of Keyaki, and has over 100 shops inside mainly for fashion. There is land mark in Tokyo Station:Maru-biru(building) holds Shin-maru Bild, Marunouchi BRICK SQUARE, and Marunouchi Oazo are the original of commercial complex located under office floor.
For regarding the fashion, out let mall: Mitsui Outlet Park is popular where imported official brand shops and trendy select shops are lined up. These kinds of malls tend to be equipped with grummet and events also.