I am new to blender, and I need help with a simple mesh manipulation.
This is a garden from Howl's Moving Castle and I am trying to build a basic structure of it.
Outside looks fine but inside looks like this
I need to find out a way to get rid of the yellow part and the red part as well. I have tried boolean modifier but it does not seem to get rid of the red part.
Can someone help me with it. I mean if there is an easier way, it will also be very much appreciated.