query: #defaultView:Map{"hide": "?coords"}
  SELECT DISTINCT ?museum ?museumLabel (SAMPLE(?coords) AS ?coords) (SAMPLE(?image) AS ?image) ?url ?layer WHERE {
  ?museum wdt:P31 ?type .?type wdt:P279* wd:Q33506. ?museum wdt:P625 ?coords
  OPTIONAL {?museum wdt:P18 ?image}
  OPTIONAL {?museum wdt:P856 ?url}
  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en".
  ?museum rdfs:label ?museumLabel. ?type rdfs:label ?layer }
  } GROUP BY ?museum ?museumLabel ?url ?layer
  ORDER BY UCASE(?layer)