The castle stands on a phonolite hill which is a volcanic rock type known for ringing when struck.
It was historically associated with the Kaplíř ze Sulevic family, who owned the estate for several generations.
The name Košťálov is derived from the Old Czech word for 'cabbage stalk' or 'stalk', referring to the hill's shape.
Architectural remains suggest the defensive system relied heavily on the steep natural terrain rather than complex masonry fortifications.
The site was abandoned by the late 16th century after it no longer met the residential standards of the nobility.
Castle ruins Košťálov sit atop a phonolite hill at an elevation of 494 meters in the Central Bohemian Uplands. Built in the 14th century, the site consists of a remaining high tower and segments of perimeter walls. The layout once included a residential palace and an outer ward protected by a moat and ramparts. Construction materials consist largely of basalt, characteristic of the surrounding volcanic landscape. The castle was abandoned in the 16th century, leading to its gradual decay into its current ruined state. It remains a public landmark accessible by marked pedestrian trails. The site offers panoramic views of the Labe River valley and the surrounding peaks of the České Středohoří range.
The interior of the remaining tower structure, which frames the surrounding valley and distant peaks.
Wear sturdy hiking boots as the path to the summit is steep and often covered with loose volcanic scree.
Bring your own water and snacks, as there are no commercial facilities or kiosks at the summit.
Visit on a clear day to maximize visibility of the surrounding volcanic peaks.
Attempting the climb in wet or snowy conditions when the basalt trails become dangerously slippery.
No formal rules, but stay within marked paths to protect the delicate volcanic hillside ecology and your own safety among loose ruins.