Vienna - An underrated gem
When planning my trip, I added Vienna as sort of a stopgap between Prague and Budapest. I knew it was significant historically and culturally, but had no idea how fun it would be. It turns out Vienna has been my favorite city, combining beautiful historical and cultural sights by day with great nightlife. There is so much to do I could have spent at least a week.
Insider Tip:Go to Prater on a Saturday night after a few (or more) drinks. Go on some rides (the flying swings offered great views of the city), have a blast, then go to Prater Dome and club it up.