Geiersberg Castle

On the rocky outcrop stands the rectangular core castle from the first half of the 13th century with its mighty keep. The residential building from the early 20th century adjoins the north side. Only low wall sections remain of the palas from the early 13th century on the northeast flank. The original complex was surrounded on the north, west, and south by a second curtain wall from the second half of the 13th century, with a corner-positioned, originally open shell tower in the west and a tower in the south corner converted into a chapel in the early 14th century.

Residential Wing

The residential wing was built in a historicizing style in 1911–1912 and already rebuilt by Helmar Temajer in 1935. The building, made of unplastered rubble masonry, has a historicizing walkway with round-arched lucarnes under the roof.

Tower

In the former south corner of the high castle stands the mighty six-story keep with a square floor plan. The regular rubble masonry was erected in the first half of the 13th century. The building has historicizing bifora windows on the upper floors of the east and south fronts; only the original light slits with reveal edges framed by light ashlar blocks date from the first half of the 13th century. On the fifth floor, the tower has a Romanesque fireplace system with a fully preserved mantelpiece from the 13th century, resting on profiled wall supports.

Outer Bailey

The outer bailey consists of layered rubble masonry from the second half of the 13th century and was completely renewed in 1912 and equipped with rectangular battlements. In the first quarter of the 14th century, the castle was integrated into the suburb's fortifications as a northern bulwark, and another wall section running to the southwest was constructed.

The shell tower was originally open on one side but was walled up in 1912. The rectangular windows with orthostat jambs are still partly in their original condition.

Gate Tower and Chapel of Saint Anne

The tower protruding from the south corner of the bailey, with its former rectangular floor plan, was converted into a chapel with an irregular 3/8-closure in the area of the upper floor at the end of the 13th, beginning of the 14th century. The current passage through the tower, the substructure for access to the chapel, and the round-arched portal date from the beginning of the 16th century.

The chapel is adorned with frescoes from the beginning of the 16th century. A crucifixion group is depicted on the east wall. On the southeast wall, the Mother of God and Saint Elisabeth can be seen. The depictions on the south wall show two bishops and knights, Saint Anne with Saint Joseph, and a half-figure of Saint Catherine. The frescoes are heavily altered by overpainting and were restored in 1954.

The high altar was crafted around 1670. The slightly concave curved altar wall is structured by niches and twisted columns entwined with vine leaves. The antependium is flanked by herm-like volute pilasters with angel heads.

Fore-castle

The fore-castle largely consists of irregular rubble masonry from the first quarter of the 14th century. It has partially collapsed in its southwestern course and was rebuilt in 1970. The fore-castle has a simple round-arched gate near the south corner and on the southwest front, respectively, and a shell tower protruding from the wall line in the southwest.