Extract the folder named lfsj-rivierascene (or similar) from the zip. Drag and drop that folder into your MSFS folder.
This airport is famous for its proximity to the Alps and is a popular hub for gliding and light aircraft. The "Riviera Scene" version usually includes: Enhanced 3D modeling of the hangars and terminal. Improved runway textures and night lighting. lfsj_rivierascene.zip
Custom vegetation and surrounding landmarks to match the mountainous terrain. Download the .zip file from the official Flightsim.to page. Extract the folder named lfsj-rivierascene (or similar) from