Where Data Tells the Story
© Voronoi 2026. All rights reserved.
Each stick rises from the castles, fortresses, palaces and ruins around it. Together they hold 7,095 landmarks in 57 countries and territories, from Iceland to the Caucasus, each at its own coordinates. A stick stands on the middle of a patch only about 20 km across at London's latitude, close to its own landmarks, and its height follows the square root of the count, so a single landmark still shows.
Rome holds the most with 62, ahead of Venice with 42, Warsaw with 34 and Saint Petersburg with 25, capitals past and present whose palaces make most of their counts. Counted by kind, the most castles stand together in Limburg around Maastricht and Valkenburg with 16, the most ruins in the Palatinate Forest and the Northern Vosges with 14, and the most fortresses around Valletta with 17.
I built Castle Map, the free map these landmarks come from.