The Sony Center is a cyber-punk media, restaurant and office complex built on the ruins in Potsdamer Platz. If you’re into a more technological experience, ask your host to show you the place in one of your tours. While not technically a “shopping center” it does have many attractions to get you to part with your money, from a modern cinema complex to (of course) a Sony Store!
The Sony Center is a great example of the modern development that’s gone on in Berlin since reunification — it’s a beautiful complex meant to be enjoyed. The open-air inner sanctum is full of cafes and restaurants, creating a lovely place to sit, sip coffee and relax