Česká Kamenice Castle, Medieval castle ruin in Horní Kamenice, Czech Republic.

Česká Kamenice Castle is a ruined medieval fortification that sits on Zámecký vrch hill overlooking the forested terrain of northern Bohemia. The stone walls and foundations are still visible among the trees, giving a sense of the structure's original size and placement.

Zikmund Děčínský z Vartenberka probably founded the castle between 1427 and 1433, after buying the Falkenštejn estate, to replace Fredevald Castle, which stayed with Jitka z Hazmburka. The first written mention dates from 1476. In 1639, during the Thirty Years' War, Swedish troops burned and demolished it.

The ruin has been a protected cultural monument since 1966. Since 1995 a foundation set up in Česká Kamenice has cleared the rubble and reinforced the walls, and a new wooden lookout tower was completed in 1998. A local legend tells of the ghost of a castle farmer: whoever saw it soon met misfortune.

The ruins are best reached on foot using hiking trails that cross through the Lusatian Mountains region. Sturdy footwear is recommended since the ground is hilly and partly covered with vegetation and loose stones.

A local legend tells of the ghost of a castle farmer: whoever saw the apparition soon met misfortune. The ruin also holds a 12-metre wooden lookout tower with 58 steps, rebuilt in 1998, from which both Česká Kamenice and the hills of the České středohoří and Lužické hory can be seen.