The only flagship store of the famous Ronnefeldt teas that I know of. Huge choice, pleasant interior design with the chance to sit down and order a tea too.
I love coming here not only because they store some of my absolute favourite loose teas ( e.g. Morgentau, Kokosnüsschen, Vanilla Chai ) but because the staff is unbelievably friendly and helpful. Never left so far without a free cup of tea to test, a sample to take home with me and the happy feeling great customer service leaves behind. My absolute favourite tea shop.