Vienna was definitely a change from Budapest, much more expensive and less to do. We only spent one full day exploring the city which we found was enough. We started our day in the Natural History Museum then moved on to walk around the lovely buildings and parks.
We had a more chilled evening as we had our first night train looming!Wasn't a great start as the tickets we bought started at a different station so had a quick dash on the underground, but made the train just in time. Luckily we'd reserved seats and had a small section with a couple of other nice people. The train took about 11 hours to take us to Zagreb in Croatia. All in all, it was definitely not as bad as I thought!