# Map layers

The difference between these map types is that there can only be one background at a time. On top of that background map, there can be one or more overlay maps. 

<figure><img src="/files/Q5FL5ABfLneu9z0FxO82" alt=""><figcaption><p>Open Map -menu</p></figcaption></figure>

Maps can be found on the toolbar. The first selection "Background map" is a dropdown list, which lists all the background maps in the project. Choose the wanted background map layer and it will be displayed in the map interface right away.

The map layers after Background map -dropdown, are the overlay maps. Overlay maps can easily be recognized, because these have the opacity slider. It allows to adjust the visibility of the map layer.&#x20;

Map layers can be edited in the Project configuration:

{% content-ref url="/pages/48NnSCXsNaQKwiOvCNVf" %}
[Background maps](/be.smart-site-management/getting-started/project-set-up-in-site-management/site-management-project-configuration/background-maps.md)
{% endcontent-ref %}

{% content-ref url="/pages/59DEJj7dMSUWAVhBkEpQ" %}
[Overlay maps](/be.smart-site-management/getting-started/project-set-up-in-site-management/site-management-project-configuration/overlay-maps.md)
{% endcontent-ref %}


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