I'm in the Vienna airport. The layover was only 5 hours and I kind of thought it would be better to just sit and relax. But I sat there thinking about it for about a half hour then grabbed my bags and headed through customs. There's a direct train to the city centre that takes 16 minutes. I didn't really have a plan and didn't have long anyways so it was really just a stroll around the city centre. I passed a couple of nice cafes that I should have stopped at but kept thinking I would find a nicer one. Which was a mistake since I never did and had to get back on the train without drinking Viennese coffee. Next time Vienna!