Zuvačov, Medieval castle ruin in Komňa, Czech Republic.

Zuvačov is a ruin of a Gothic bergfried-type castle on the Hrádek spur at 501 m, about 1 km southwest of Komňa. Its oval core, over 90 m across, held a round stone tower 12.5 m in outer diameter, the third largest of its time in Moravia; only remnants of its masonry survive.

Archaeological finds date the castle to shortly after the mid-13th century; its size suggests a royal castle in the network of crown strongholds in this part of Moravia. In the 14th century it passed to the Šternberk-owned Světlá estate. The first written mention is from 1448, when Zdeněk of Šternberk sold Komňa with the ruined castle to Miroslav of Cimburk, showing it was already abandoned; life there ended in the first half of the 15th century, and some historians link its demise to the Orphans' campaign into Hungary in 1431.

The ruins reveal how medieval fortifications looked in this region and reflect the building practices of the 13th century. Visitors can observe the stone walls and grasp how important such structures were for controlling the surrounding territory.

Access is on foot from Komňa: first along the yellow marked trail to the Skalky junction, then along the green marked trail to the ruin. Since 2010 simple wooden log steps and stones placed along the path ease the climb to the ridge at 501 m.

A roughly 200-year-old sycamore maple grows exactly in the middle of the former tower's remains, unusually forked into two trunks with circumferences of 160 cm and 450 cm. The tree, called the Zuvačov maple, placed fifth in the final of the Tree of the Year poll in 2022.