Ustra Fortress
Sign in to saveUstra () is a medieval fortress in the eastern Rhodope Mountains in southern Bulgaria. It is among the highest and best preserved fortifications in the mountain range. The fortress was controlled by the Byzantine and the Bulgarian Empires until the region was conquered by the Ottoman Turks in the second half of the 14th century.
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Ustra () is a medieval fortress in the eastern Rhodope Mountains in southern Bulgaria. It is among the highest and best preserved fortifications in the mountain range. The fortress was controlled by the Byzantine and the Bulgarian Empires until the region was conquered by the Ottoman Turks in the second half of the 14th century.
Ustra Peak on Livingston Island in the South Shetland Islands, Antarctica is named after the fortress.
Excerpted from Wikipedia’s “Ustra Fortress” article, available under the CC BY-SA 4.0 licence.