Kamianets-Podilskyi Castle (Ukrainian: Кам'янець-Подільська фортеця). The amazing town of Kamyanets-Podilsky is a fortress itself, situated on a rock surrounded by a 50 meter deep canyon, created by a loop in the Smotrych River. Kamianets-Podilskyi, Khmelnytskyi Oblast (province), western Ukraine.