Ostrý Castle, Gothic castle ruin in Františkov nad Ploučnicí, Czech Republic.
Ostrý Castle is a Gothic castle ruin in northwestern Bohemia with stone walls featuring pointed arches. The remaining foundation stones still show the layout of the original fortified structure.
The castle was built during the Middle Ages as a fortified outpost to control the surrounding regions. It later fell into disrepair and became the ruins visible today.
The ruin demonstrates Gothic design principles through its remaining stone structures and is recognized as a cultural monument. These stones show how medieval people built defensive features into their architecture.
The site is best reached on foot via marked hiking trails through the surrounding forest. Parking is available in the nearby town of Františkov nad Ploučnicí.
The stone foundations sit at an elevated location that offers wide views across the surrounding landscape. On clear days, visitors can see rolling hills and forests in the region from this vantage point.
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