Koerich Castle

Koerich Castle, locally known as Gréiveschlass, is a historic ruin situated in the village of Koerich in central Luxembourg. Located on level ground within the Goeblange stream valley, the site forms part of the famous Valley of the Seven Castles. Its imposing keep and remaining external walls blend harmoniously with the surrounding Baroque church and traditional village houses. The fortress was originally constructed between the late 12th and early 13th centuries by Wirich I, Lord of Koerich, featuring a late Romanesque architectural style. Over the centuries, the structure evolved significantly, acquiring Gothic elements in 1304 under Godefroid of Koerich and later expanding into a more comfortable residence with Renaissance wings added in 1580 by Jacques de Raville.

The castle's history reflects a transition from a defensive stronghold to a palatial home before falling into disrepair. Originally protected by a moat and fortified entrance, it boasted massive walls up to 3.5 meters thick and an impressive keep that once stood much higher than its current 11 meters. Subsequent owners introduced Baroque additions in the 18th century, but following the death of the Raville family, the property suffered from neglect and gradually became a ruin. In 1950, the last private owner performed essential structural repairs before transferring ownership to the State of Luxembourg.

Today, Koerich Castle remains an active archaeological and conservation site where major repair works are still ongoing. Despite the incomplete restoration, the public can visit the grounds free of charge to explore the remnants of its rich past. Visitors can observe the surviving south-western tower, which houses a chapel, along with evidence of its former grandeur such as a stately fireplace and large rectangular windows. The site stands as a testament to the region's medieval military architecture and its later evolution into a noble residence.