With its onion-towered church standing above the ruins of the medieval castle, Koerich has a particularly attractive rural setting although it is only 15 km west of Luxembourg City.

According to the commune's website, the first documentary reference to Koerich was in 979 but it was not until the 12th century that its two castles were built: the Fockeschlass of which all traces have disappeared though it is shown on the first cadastral map in 1771; and the Grevenschlass whose ruins still dominate the centre of the village.

From 1380, Gilles of Autel and Koerich converted the stronghold into a more comfortable residence by building two 12-m towers at either end of the south wall.

The stately fireplace on the first floor and large rectangular windows testify to the castle's palatial splendor at the time.

After the death of the Ravilles in the second half of the 18th century, the castle started to fall into ruin owing to lack of maintenance.

In 1950, Pierre Flammang, the last private owner, carried out some essential structural repairs before the castle finally came into the hands of the State.

New shops and cafés have also opened.The nearest supermarket is Cactus in Windhof, less than a couple of kilometres from the heart of Koerich.There is also a new Lidl being inaugurated in 2022.