Building an Interactive Map of the Roman Empire

It’s always interesting to see how the maps change throughout history, they are one of the most powerful visual ways to see historic information. Below is an example of a map for the Roman Empire, which lasted a few centuries and included large territorial holdings around the Mediterranean Sea in Europe, North Africa and West Asia.

The plugin itself doesn’t include a map of Roman Empire regions, but since we can use custom geoJson files, after some online search I came across a map for it which I then adapted to use with the plugin, also using the overlay option to display it in the normal world map focused on the Mediterranean sea.

World Map with US divided by states

Having a world map with the US divided by states in your WordPress site is now possible with Interactive Geo Maps PRO.

The PRO version of the plugin will allow you to ‘overlay’ maps. In the example above we created 2 separate maps. A world map and a map of the US divided by states.

In the world map we selected to overlay the US map. As simple as that. You can overlay as many maps as you want in the ‘base’ map. You could have other countries divided by regions if needed.

You will be able to add interactivity to any country and any state in the map, setting up custom hover colours, tooltip content and click actions.

Contact me or leave a comment below with any questions you might have.

Modified maps of Portugal

The plugin comes with more than 200 maps created automatically with real geographic data. However some countries might not be composed of a unified mass of land, they include islands or other territories. This is the case for the US (Alaska and Hawaii) and also for Portugal, which includes some islands in the middle of the Atlantic ocean. For this reason I have included some modified maps of Portugal in the plugin. Below are some examples.



Original Map

If you compare the maps above with the original map below, with real positioning of the islands, you’ll understand why having a custom modified map is important to improve the way the map displays and the user interacts with it.

However, these modified maps have a small disadvantage: if you plot markers using coordinates for the real location of a city in one of the islands, the marker will not display. You will need to use the adjusted coordinates of the ‘new’ location of the islands. But this can be easily done when creating the map by simply clicking the location where you want the marker to be placed. The map edit interface will give you the coordinates of the location clicked.

In addition to the modified maps above, I also included some maps for specific cities. The plugin includes maps with the ‘regions’ of the 2 biggest Portuguese cities: Porto and Lisbon.



These are just examples of what’s possible to do with the plugin. In any of the above maps you can set click actions, change the region colours and set hover colours. See the full list of included features.

Future versions of the plugin will probably include even more maps for Portugal. If you have any special request of a city or region in Portugal, feel free to leave a comment below or contact me.

Republika Srpska Map

As defined in Wikipedia:

Republika Srpska, or simply Srpska, is one of the two entities of Bosnia and Herzegovina, the other being the Federation of Bosnia and Herzegovina. Its largest city and administrative centre is Banja Luka, lying on the Vrbas river.


A user needed a map for this region and we created this example using the map of Bosnia and Herzegovina and then narrowed it down to only display the 2 regions we see: Republika Srpska and BrĨko distrikt. Here’s how it displays.

Republika Srpska is also subdivided into other regions, but unfortunately the plugin does not include the map for them. However, in the PRO version it’s possible to use custom maps if you have a geojson file for those regions compatible with amcharts.