How do I add images to my elements?
Building a map by hand
If you are building a map by hand, add a Field entitled "Image". Then, add the public URL for the image in the "Image" field for each element.
Building a map via spreadsheet import
If you are using a spreadsheet import to create your map, make sure to add an "Image" column in the the "Elements" sheet. In the "Image" column, add the public URL for the image that you want to appear for that element.
See also: Profiles documentation