Burg Haynsburg, Medieval castle in Wetterzeube, Germany

Burg Haynsburg is a four-winged castle complex enclosed by moats in Wetterzeube, with a free-standing round bergfried about 24.43 m high and 12.81 m in diameter. Its walls are built of sandstone blocks up to 4.18 m thick, leaving an interior only 4.45 m across. The northeast wing has a Renaissance stepped gable facing the Elster valley, and the chapel is located in the Sidonius Tower, not in the bergfried.

Burg Haynsburg was first documented in 1185 with the nobleman Conradus de Hagensberg, and in 1238 Margrave Heinrich's charter named it a fortified place. Sold in 1295 to Margrave Friedrich of Meissen, it passed in 1305 to the Bishopric of Naumburg-Zeitz, which held it as its strongest stronghold. Unstormed in the 1450 Saxon Brother War, it was enlarged under Bishop Peter von Schleinitz and restored in 1515 under Bishop Johannes III von Schönberg.

The castle's name comes from the noble family "Conradus de Hagensberg", documented from 1185. The chapel sits in the Sidonius Tower, an oval defensive tower named after Johann Sidonius, a canon of the Zeitz collegiate church who was confined there from 1685 until his death on 3 March 1692 at age 64. The Heimatverein keeps a local history room in the core castle, open on special occasions.

Wear sturdy shoes when visiting, as the stairs and passages inside the tower are steep and narrow. Local heritage volunteers offer guided tours that provide more information about the structure and its past.

The fortification tower was built using large sandstone blocks that were precisely cut and fitted together. This craftsmanship demonstrates the building skills of medieval workers who constructed it.