As we all know, a livable city must first have a livable geographical environment. Vienna is located on the Danube and in the temperate zone. Warm as spring all year round, suitable for human survival. Another criterion for judging livability is its humanistic environment. Vienna is the capital of Austria and the music city of the world. The edification of sentiment is beyond doubt. For many years, Vienna has been rated as one of the most livable cities in the world by the United Nations. This shows that its livability has been internationally certified. To sum up, I think Vienna is the most livable city.
All in all, that's all I want to say.
References:
oneself
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