A map made using query.wikidata.org and a SPARQL query. Each point represents a city that has a sister-city in Armenia.
<p>Query:
SELECT ?item ?itemLabel ?sisterCity ?sisterCityLabel ?coord 
WHERE {
</p>
<pre> ?item wdt:P17 wd:Q399 .
 ?item wdt:P190 ?sisterCity .
 ?sisterCity wdt:P625 ?coord .
 SERVICE wikibase:label { 
   bd:serviceParam wikibase:language "en" . 
   ?item rdfs:label ?itemLabel .
   ?sisterCity rdfs:label ?sisterCityLabel .
</pre>
  }
<a href="//commons.wikimedia.org/wiki/User:Tobias1984" title="User:Tobias1984">Tobias1984</a>
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<span class="int-own-work" lang="en">Own work</span>