Below you'll find a few examples of maps defined using markup and semantic-map. Have a look at the source of the page to see how the maps are defined!
Even the attribution is missing!
Still not too impressive, but it's a start!
I mark the initial center of the map.
I mark another random(?) spot on the map!
There's also some merging of elements going on in the background (look at the source!)
Does it look dangerous to you, too?
The MultiPolygon also has a custom style applied.
The map features here are also not defined individually but as a list of GeoJSON "Feature" objects instead.
to first create the map and then add features to it.