Vienna. The city that conjures up so many different images. Palaces. Royalty. Music. Orchestras. Waltzes. Sachertorte. Ultravox. But one thing that amazes all visitors to Austria’s capital city is the diversity of architecture across its 23 districts. From the early Romanesque churches to the more modern and surreal structures such as the Hundertwasserhaus, a trip to Vienna can feel like a voyage through many different time zones. And all without sounding like something out of a science fiction tale!