Christmas Markets are the main reason to visit Vienna from mid-November to late December. The Austrian capital, definitely, sparkles during this period as Christmas Markets create a magic and dreamy atmosphere throughout the city. Strolling and shooting photos around becomes really a unique experience.
Years ago, I read somewhere New York is the most photographed city in the world. No wonder about it. New York could not be beaten as the undisputed capital of the world in many regards, though is not even capital of its country, the USA.