Town and district museum in Dieburg's Schloss Fechenbach: Roman era with the Mithras cult relief, prehistory, town history, and folk culture.
September 6, 2026 – November 29, 2026
Anniversary exhibition marking the discovery of the Mithras cult relief in 1926 and the founding of the museum: history of the find, research, and the spread of the Mithras cult in the Rhine-Main-Neckar region, complemented by a wind installation by Farangis Yegane.
It all began with a chance find: in 1926, construction work in Dieburg uncovered the cult relief of the Roman god Mithras, carved on both sides and originally designed to rotate. As a result, the town took over a substantial collection of Roman finds for the first time, which gave rise to the local history museum. In 1951 the Bachgau-Museum Schaafheim was incorporated, greatly expanding the folk culture collection in particular.
That same year, the district and town museum moved into Schloss Fechenbach on the edge of the old town. On the site of a medieval castle-retainer's seat, the Ulner von Dieburg family had built a Baroque palace in 1717; in 1841 it passed to the barons of Fechenbach, who remodeled it in late Neoclassical style around 1860. During the town's comprehensive renovation, medieval foundations as well as Baroque and historicist wall and ceiling paintings came to light, and a modern extension enlarged the exhibition space.
Since its reopening on June 30, 2007, the tour has spanned the Neolithic period to the 20th century. The focus is on the Roman era, when Dieburg was the main town of an administrative district, with a reconstructed mithraeum and dining room. Other sections cover the Middle Ages, the nobility, pottery, the blue-dyeing craft, and a grocery store from around 1910. In 2025 the museum welcomed 6,307 visitors, making it one of its best years since the reopening.
| Adults | €3 |
|---|---|
| Reduced | €1.50 |
| Children & teens | freefree up to age 15 · Children and young people up to age 15 get free admission. |
| Seniors | –Holders of the Seniorencard A or S of the Darmstadt-Dieburg district get free admission. |
| Groups | –Group tours by arrangement from €35 per hour plus admission. |
Exhibition openings are free. Guided tours: €35 per hour, evening tour €45, Roman evening with costume demonstration, tour, and a glass of mulsum (Roman honey wine) €70 (two hours); Roman workshop for children ages 12 and up €50 (approx. 90 minutes).
According to the Hesse Museums Association, suitable for wheelchair users and people with limited mobility; the museum can provide more detailed information.
Great for kids & families
| Kids’ admission | free up to age 15 |
|---|
Tours for preschoolers ages five and up (“Die Römer in Dieburg”), a Roman workshop for children ages twelve and up, children's birthday parties with changing themes, and activity days such as the blue-dyeing days and painting activities on International Museum Day. Children and young people up to age 15 get free admission.
Parking available · 2-min walk to the entrance
There are only a few parking spaces right at the museum. The recommended option is the “Auf der Leer” parking lot (GPS: An der Brückenmühle), from where you cross the market square to the museum.
The palace is on the edge of Dieburg's old town near the market square.
Get directions“Café im Schloss Fechenbach” on the upper floor (separately run, Wed–Sun 10:00–18:00).
The large hall and the meeting rooms “Hugo von Fechenbach” and “Pleickard von Ulner” are available for rent; inquiries to the sports and culture office of the town of Dieburg.
Inquiries & details| Guided tours | yes · approx. 60 min |
|---|---|
| School programs | yes |
| Good to know | On the first Sunday of every month, public matinee tour of the museum and palace at 11:15 (free, admission only, no registration needed). Group and school tours on topics such as the Roman era, the Middle Ages, or the building's history by registration at 06071 2002-460. Digital content, for example on the Mithras stone, is available on the website under “Digitales Museum”. |
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