The city of Graz has launched its opendata portal today at http://data.graz.gv.at. The 71 published machine-readable datasets also include basemaps for the city which can be configured to be displayed with Leaflet Maps Marker.
Just head to your settings page and enter the following information into one of the WMS layers under the WMS tab:
Name: OGD Graz – Rasterdaten
baseURL: http://geodaten1.graz.at/ArcGIS_Graz/services/Extern/BASISKARTE_WMS/MapServer/WMSServer
Layers: 1
Format: image/png
Transparent: I would recommend false, but can also be set to true
Version: 1.3.0
Attribution: WMS: City of Graz (<a href=”http://data.graz.gv.at” target=”_blank”>http://data.graz.gv.at</a>)
Display Legend: yes
Legend: http://geodaten1.graz.at/ArcGIS_Graz/services/Extern/BASISKARTE_WMS/MapServer/WMSServer?request=GetLegendGraphic%26version=1.3.0%26format=image/png%26layer=1
Support for Subdomains: no
Example map:
A list of more layers you can configure within the plugins settings can be found here: https://www.mapsmarker.com/kb/reference/community-curated-list-of-custom-layers/
Please feel free to add new ones you are using…