The settlement of Bakhchysarai in Crimea, formerly the capital of the Crimean Tatar khanate and still a center for Crimean Tatar identity and Turkish influence. See https://en.wikipedia.org/wiki/Bakhchysarai. Geonames id: http://www.geonames.org/712969/bakhchisaray.html.
The graph displays the other subjects mentioned on the same pages as the subject "Bagcheserai". If the same subject occurs on a page with "Bagcheserai" more than once, it appears closer to "Bagcheserai" on the graph, and is colored in a darker shade. The closer a subject is to the center, the more "related" the subjects are.