Anyone figured out how to remove improvements?

[molsonite]

I've conquered an enemy city and the previous kingdom did a terrible job using the urban squares. I'm probably missing something obvious.

 

[Elhoim]

Press CTRL when you are with a worker on the tile. The icons on the worker actions should lit up. It's definitely an unnecessary step, IMO.

 

[molsonite]

Well, thank you for the tip. With the late game advent of windmills and water mills the need to do some rearranging is considerable.

 

[Sirian]

Urban terrain cannot be converted to wilderness. It's Urban forever. However, what's on an Urban tile can be overwritten by a new improvement. ... The Ctrl button required to be pressed, to overwrite an existing improvement, is there to help prevent accidentally putting a Farm on your Pyramids.

 

[molsonite]

Can you plant trees?? Harvest them and move them? It would be understandable if that was a longer process like trees growing back in a region where they were chopped.
But Forestry as a tech should allow planting.