Do you care if its warm? Arizona? Miami/Florida keys?
Op here
Not especially but I also think super cold (Montreal) or gray rainy all the time if it’s primarily an outdoor trip is not enjoyable . But a European city where there is a lot to do indoors as well is fine. I thought about Venice because it’s less crowded then (I’ve been there in November and December before but kids have never been) Germany is an idea…I am not as familiar as I am with France , have been to Berlin years ago, Stuttgart (work) and Munich but I’m sure we could spend a week in Berlin and have a lot to do and see.
I should add that we’ve done plenty of beach vacations , would like something else. Grand Canyon and arches, Zion etc is on the horizon but I think it would be chilly for hiking.!