Blenheim Palace was missing, and so were 48 others, because Wikidata files them as houses

The atlas was missing its eleventh most read landmark. Blenheim Palace — a UNESCO World Heritage Site, Churchill’s birthplace, 89,233 Wikipedia readers in sixty days — sits between Windsor Castle and the Palace of Westminster in every ranking this atlas computes, and was on none of its maps. So was Highclere Castle , which most of the world knows as Downton Abbey. Both cleared every admission test…