How to create a searchable map of intersections?

Hello forum, hope some of you might have a good suggestion for something in the store that can assist with a rather specific request.

My team is constructing a unity-based recreation of a real-world event and as part of the project we need to map out a large area in which there are a network of intersecting streets, of sorts. Basically it's a large camping area and the way people find each other is by relaying their campsite's location relative to the nearest intersection of the "streets" the event builds to divide up the campsites. Here's what we're trying to do:

We want to create a drop-menu system that would allow the user to easily search for and then display a pinpoint of where a specific intersection exists in an overhead map. It would also be nice if then, from that pinpoint on the overhead, be able to click on the point and tell the system to beam the camera to that location.

Any suggestions? We've been looking at a bunch of different mapping/grid solutions on the store and none seem to quite be doing what we're looking for.

Much obliged for your assistance.