I'm sure this is answered somewhere by someone already but my searches so far have been futile. I have CC3+ etc. as well as photoshop.

What I'm wanting to do is take either a large continental map and zero in to make a more detailed area map or take an area map and expand outward to make a larger view of the same landmass.

Is there a way to keep/copy coastlines (etc) but change the scale to make a map that shows more or less of the area?

I'm a long time photoshop/photography guy so I'm not a noob at this but I'm not sure what technique would work in CC3+.