Berlin has its KDW (Kaufhause des Westens), Munich the Oberpollinger. A luxury department store where you can easily spend a 5-digit number and can escape the mainstream.
Berlin has the KDW, Munich has the Oberpollinger. The shop-in-shop concept makes it easy for everyone just to wander around and watch the rich people buy ridiculous things for even more ridiculous prices.
There is a nice rooftop terrace with a wonderful view over Munich. In the winter times there is even a tiny Christmas Market.
Mon-Sa: 10:00-20:00