Observation deck at the top of Gedymin's tower in Vilnius (Lithuania).
Probably one of the best places in case you want to see the city from a height.
Windy and breathtaking both literally and figuratively :)
Observation deck at City Hall of Lviv (Ukraine). We climbed there twice: in autumn and in summer. The views of the old town are charming regardless of the season.
One of our beloved cities.
at the top of St. Stephen's Cathedral in Vienna. We were there in winter, so it was quite frosty, but absolutely justified :) Vienna is beautiful and Christmas was all around us :)
not a height, but definitely a high-altitude dominant of Rome (Italy) - Coliseum. Huge lines. Always. But for sure a must-see if you're in The Eternal City.
...and New Year fireworks were nice as the background of this remarkable sight.