Turku in Finland. Go there in July during the DBTL Festival, I'm helsinkian and despite all the fun stuff happening here where "everything is", I still find the DBTL to be the best part of the summer.
Of course, it's super expensive to get here, but in case money isn't the problem...
Iceland, Switzerland, Sweden, Norway, Slovenia, Finland.
Groningen, Utrecht, Limerick, Cork, Naples, Palermo ....
Antwerp for sure
http://www.skyscrapercity.com/showthread...
Manchester, UK, Antwerp ,Belgium, Basel, Switzerland.....