Theres a looooooooong list of things to do in Copenhagen ;-)
Take a trip on the "kanalrundfart", which is a boat trip in the channels of copenhagen.
The round church "Marmorkirken"
Going up in the tower of "Vor Frelser Kirke" - approx 98 meters above ground. (just been there with my son, 11 years)
Enjoy - give me a shout if you need more input ;-)
/Mark over 6 years ago