In this chapter, you learned how to add custom markers to your Leaflet map. You can now draw your own markers or use pre-existing images. You can also use plugins to load markers from Twitter, Font Awesome, and Mapbox. Lastly, you now know how to create bar chart and pie chart markers to visualize data in the form of a marker. At this point, you have acquired enough knowledge of Leaflet to build almost any style of map you can think of.
In the next chapter, you will learn how to use Economic and Social Research Institute (ESRI) data in your Leaflet map. As the most widely used GIS platform, you will most certainly run in to its data formats.