Add pins to a map or image and link notes to the pins

I'm a huge fan of RPG campaigns and It would be fantastic if we could place pins on a map or image and link notes to those pins. This could be also useful for planning travels, or to take notes during a travel. In my recent visit to Rome I have taken notes and impressions of all the locations I visited and would like to be possible to look into a map, see all the places I've visited but without loosing the privacy that comes by using google maps or something similar. It would also be fantastic to create mood boards.

I really hope you consider my suggestion, because at the moment I have to use 2 other apps for that and I really love capacities. :)