If the "markers on a map" part of the question really means "how do I use a javascript library to display information over the top of some existing tils" tiles" then you might find the links from [here][1] useful. It's possible that [uMap][2] might also work for you - have a look at the various links from [here][3] and [this previous question][4]. [1]: http://switch2osm.org/using-tiles/ [2]: https://umap.openstreetmap.fr/en/ [3]: https://bitbucket.org/yohanboniface/umap [4]: https://help.openstreetmap.org/questions/21987/how-to-retrieve-my-data-on-my-own-umap-instance-with-api

If the "markers on a map" part of the question really means "how do I use a javascript library to display information over the top of some existing tils" then you might find the links from [here][1] useful. It's possible that [uMap][2] might also work for you - have a look at the various links from [here][3] and [this previous question][4]. [1]: http://switch2osm.org/using-tiles/ [2]: https://umap.openstreetmap.fr/en/ [3]: https://bitbucket.org/yohanboniface/umap [4]: https://help.openstreetmap.org/questions/21987/how-to-retrieve-my-data-on-my-own-umap-instance-with-api