Geoplotlib is a Python visualization library specifically meant for geographical data and creating maps. It can generate elegant interactive graphs using data from Open Street Map. If you want to know more about Geoplotlib, take a look at this blog.
Python GUIs can be easy to develop and use with a native Windows development tool like Delphi or C++Builder. The Python4Delphi library enables easy interfacing between Python and the rich native VCL framework available in Delphi and C++Builder. Delphi and C++ are powerful programming languages that mesh well with Python.