How to see which tiles need to be captured in siege?

[coocoo]

I know I need to capture the "walled" tiles. But where are they? There were several times when I feel I have captured all of them but it just doesn't let me take the city. I had to zoom in to see which tiles have something looks like a wall, let my units randomly step around, and sometimes it worked but sometimes doesn't.
Is there an UI that can tell me which tiles are still remaining to be captured in a siege?

[Mal]

I wish there was a way you could highlight these tiles with a lens selection. Maybe in a future mod.

Anyway, for now hover your mouse over every building tile in the settlement and look for "fortified district," which is provided by the Dur-Sharrukin wonder.

Once you know what to look for it gets easier.

[Dray Prescot]

I can not even capture IND States, I try fortifying units in the Central Tile and the 6 Surrounding Tiles, and that does not do the job.
Help?!

[Mal]

Originally posted by Dray Prescot:

I can not even capture IND States, I try fortifying units in the Central Tile and the 6 Surrounding Tiles, and that does not do the job.
Help?!

Independents are captured by destroying the center (the one with the name badge) tile's defenses and then walking a unit (even a ship works) onto the tile.