Schloss Frohburg, Medieval castle museum in Frohburg, Germany

Schloss Frohburg is a four-wing complex around an irregular inner courtyard entered through a gate passage in the south wing, on a flat hill between the Schlossteich pond and the Wyhra. The two- and three-storey buildings have ochre roughcast walls with smooth-plaster corner quoins, baroque window surrounds, two late-Gothic curtain-arch frames at the southwest corner, and slate roofs. The vaulted cellars partly date from the Romanesque period.

The castle grew from three stone buildings in the 12th century and took its current four-wing form around 1500. Successive changes shaped the complex over time until it became the museum it is today.

The museum's ceramics section centres on Kurt Feuerriegel (1880–1961), the potter who worked in Frohburg in the first half of the 20th century and promoted the local pottery trade. Displayed are his faience, terracotta figures, stove tiles, architectural ceramics and facade ornament. The two neoclassical halls date from the early 19th century: the Steinsaal holds Karl Ludwig Kaaz's romantic wall painting of Lake Nemi, the Bildersaal a coffered ceiling painted with rosettes of varying shapes.

The museum entrance lies on Florian-Geyer-Straße, about 300 metres south of the market square; the gate passage runs through the south wing into the inner courtyard. The castle park follows the Wyhra to the south-east, where the garden house still awaits restoration. The historical school lesson uses a classroom of around 1900 with the teaching materials of that time.

The castle cellars partly date back to the Romanesque period, and the west wing preserves a Romanesque vaulted cellar. In the north wing, a painted wooden beam ceiling from the Renaissance survives, while the west wing holds a representative Baroque staircase. These three building phases can be compared within one building.