In 2013 and 2014 I made a few presentations to various groups of people talking about Wikidata.
When creating those presentations I used as many graphical representations of the data in Wikidata as possible to try and give people an clearer picture of what is already stored.
One of the best visualisations at the time was the Wikidata map created by Denny Vrandečić which came after the introduction of coordinate locations to Wikidata.
Below you can see a GIF showing the additions of the coordinate location property to Wikidata items over roughly the first 40 days of enabling the coordinates data type.
