Vienna is lovely any time of year. Spring, summer, and fall each have their own particular charms; winter, while quite cold, still attracts plenty of visitors, thanks to the city's Christmas market and New Year's Eve celebration. The official language of Austria is German, though nearly half the population speaks English well. The currency is the euro. Vienna International Airport receives flights from abroad and is just 11 miles from the city itself. You'll likely need an adapter for your electronics, as Austria is 230 volts with F socket plugs.