Welschbillig Castle, Medieval castle ruins in Welschbillig, Germany.

Welschbillig Castle is a medieval fortress ruin with a rectangular layout surrounded by moats and featuring two round towers at the gateway. A stone bridge crosses the water defenses and connects the outer fortifications to the interior of the complex.

The castle was built around 1140 on the site of a Roman villa and was significantly fortified between 1242 and 1299. Destruction by French forces at the end of the 17th century left it in the ruined state seen today.

The gatehouse displays two round towers typical of medieval defensive design from this era. Visitors can observe these architectural features and understand the building methods of that period.

The ruins stand within the village of Welschbillig, where the parish church of 1889–1890 and an Amtshaus of 1711 now occupy the old castle grounds. The gatehouse with its two round towers, the stone bridge over the moat and the remains of the northwest gate are the main features to look for. The site is a ruin, so watch your step on uneven masonry.

Beneath the current ruins lie remains of a Roman residence that existed long before the medieval castle. These layers reveal how the land was used for settlements across many centuries.