Custom 2D Map with Player Location

I am looking to make a custom image-based map of a location (such as a museum) and I want to show the user's location on that map. I will want to show different markers and points of interest on the map as well and will want the option of triggering an alert when the user's position reaches proximity to one to one of the markers.

I am looking for some direction on the best way to go about achieving this. Whether all of this can be done with Unity alone, or if I should use a service like MapBox.

Thanks!
Bob

 

That's not what this sub-forum is for. This forum is specifically for pathfinding navigation.
That said, there are many tutorials to create minimaps in Unity.
https://unity3d.com/learn/tutorials/topics/graphics/introduction-and-goals-0?playlist=17102 would be the place to get you started.