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landmarks at Kyustendil, Bulgaria
Hisarlaka fortress
wikipedia
![Kyustendil TB (8)](data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 450 280"%3E%3C/svg%3E "Hisarlaka medieval fortress in Kyustendil, Bulgaria")
.jpg "Hisarlaka medieval fortress in Kyustendil, Bulgaria")