How to destroy own city?

[🥇 Xaxoon 🥇]

I got 3 cities after a victory. I dont need them, and after i got them, i've never been asked if i want to burn them down or keep them. How can i destroy them now?
Thank you.

[BladeSe7en [ICON_RESOURCE_FURS]]

You can't destroy any of your own cities. The only time you can raze a city is the same turn you capture it (unless it's a capital) if you click keep you can't decide later to raze it

[tempest.of.emptiness]

In other words, don't ask for cities in a peace or trade deal if you don't want them because you won't be given the chance to raze them.

One thing you can do, if you don't need the territory, is to give or trade away the cities you don't want. If you don't want the cities but do want the territory they cover then choose a recipient that you don't like, declare war on them, and then raze those cities as you capture them.

[Birds Aren't Real]

Sell it to a civ that's really far behind. Also before you sell it swap as many tiles as possible from that city to a city that you do want.