Patmos Fortress
| Patmos Fortress | |
|---|---|
Ruins of the walls of Patmos | |
Patmos Fortress | |
| General information | |
| Architectural style | Fortress |
| Location | Borovitsa, Bulgaria |
| Coordinates | 41°40′55″N 25°13′50″E / 41.68194°N 25.23056°E |
| Construction started | 5th–14th century |
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Patmos (Bulgarian: Патмос) is a medieval fortress in the Rhodope Mountains of southern Bulgaria rising over a promontory near the confluence of the rivers Arda and Borovitsa. A few kilometers to the west upstream the valley of the Arda are located the ruins of the fortress of Krivus.