This is a postcard I recently found when going through some old boxes which shows the beautiful city of Vienna, capital of Austria. Unfortunately, I have never managed to visit it. Additionally, I learned from reading about Vienna that it is the second biggest German speaking city after Berlin.
One of my colleagues, will move to Vienna next week and hopefully i will be able to visit this historic city soon. Please let me know what I need to see and maybe tell me place that is a secret thing to visit in Vienna.