Didn't go to Tivoli even though I know it's very famous, dunno why I'm not attracted to it. I think it may be the Design Museum you're referring to? I looked it up and was interested to go but didn't have enough time.

I did go to Hans Christian Andersen birth place, that was a nice day out. Will be posting of course ☺️

Overall Copenhagen is a nice city, even managed a last minute meet up with a local Hiver!!