Chlum, Castle ruin in the Central Bohemian Region, Czech Republic.

Chlum is a castle ruin on a small promontory above a pond at the eastern edge of Chlum village, about 3 km southeast of Zbýšov in the Kutná Hora District, at 460 m elevation. Its regular core is surrounded by a ditch and a massive rampart with two round earth bastions; only a fragment of the eastern palace wing and the vaulted basement of the southern palace survive.

The castle was built in the second half of the 13th century on the site of an earlier hillfort, probably by Blesh, ancestor of the Slavata of Chlum and Košumberk, or by his sons. This old Czech family held it for almost 300 years. In the 15th century it was enlarged and fortified; during the Thirty Years' War imperial troops damaged it several times and it fell into ruin, its stone later used to rebuild the village.

The castle gave its name to the village of Chlum and to the Slavata family, who held it for nearly 300 years. Its remains are protected as a cultural monument, and stone from the ruin was later used to rebuild the village.

The ruin lies at the eastern edge of Chlum village, about 3 km southeast of Zbýšov in the Kutná Hora District, on a small spur above a pond fed by the Chlumský potok at 460 m. The core is ringed by a ditch and a massive rampart with two round earthen bastions, so expect uneven ground.

The castle core was ringed by a ditch and a massive rampart, the main element of late 15th-century artillery fortification, strengthened by two round earthen bastions and a smaller conical one. Only a fragment of the eastern palace wing survives, with the imprint of a timber chamber.