PEOPLE AND GROWING
Not sure about a hidden secret, the secret seems to be the combination of contrasts that enrich each (besides the emerging strengths of “real” culture):
The Tay, different from all heights and angles (foregrounds of beautiful parks (Balgay Hill, Magdalen Green) or industrial heritage or multis or Meggie’s Centre);
Buildings old and new of different uses (the Mecca Bingo beside the church, the mosque among the old jute mills, the new university buildings beside old houses, the medieval arches under the pub back exit);
And then the “real” culture as it spreads throughout the city: Scottish Dance Theatre and Dundee Schools Musical Theatre, Community Theatre in the Rep, small scale viewings in the DCA and Hannah Mclure Centre, school competitions (art and music).
Not sure this helps (sorry)