I don't really tavel so I've only done Edinburgh, Glasgow, London and Amsterdam so far but every city has something to offer in my limited experience, you just have to be willing to try something new
Some cities are night cities with tall dense urban stuff and work particularly well in the rain, others are well kept and prim with really good floral and summer stuff, others are dusty and travelesque. Work different and you can always match a city's appeal
My favourites are Edinburgh and Amsterdam. Amsterdam because it's ridiculously cheap, it's impossible to get lost and every street is a photo opportunity or two. Edinburgh for the opposite reason- it's easy to get lost in and advisable to do so because you'll always find something beautiful down a weird wynd or close
>>3408899Stockholm you say? Are they similar?