The suggestions of @JohnK seem a nice start, @Lokamidou.
In case you’re still wondering about zooming and moving around, feel free to check this thread: Moving through a tiled map … many thanks to @Deltakosh for the help.
Please keep me informed. I have similar Q’s about placing buildings on my map, using OSMbuilding or some other neat trick. The json from OSMbuilding is quite a challenge for me to process and generate meshes…