The tower of the Elephant.
What do we know for sure?
It is smooth, shiny, and cylindrical.
It is 150′ tall with gems at the rim.
There are doors and windows but they are very hard to see.
There is an outer wall that Conan can jump up to and grasp with his fingers and pull himself over, so lets say about 10`.
There are shrubs around this wall.
On the other side of this wall is an area where guards patrol.
Past this is another wall of a similar height that is quite wide as Conan lies flat on top of it.
Past this is the main garden with lions.
Do we know how wide the tower is and the layout of the walls?
I am assuming they are circular in nature with the tower and the dead centre, but that is speculation…