If you only have one day in Vienna and you have difficult time deciding where to go, the best solution is to go for a walk in Vienna. You do not need to plan a visit to a Museum, believe me you will see an astonishing amount of public art in the streets of Vienna. It is such a pleasure to walk in the historic center of Vienna where you could see palaces, beautiful churches and buildings. In my opinion, the only other city in Europe where you will have this "imperial" feeling will be Paris. However, Paris is not as pedestrian friendly as Vienna. The city is excellent every season, but the best time to go is Spring and Autumn. Take a closer look to the façade of the apartment buildings, you will bu surprised.