The most beautiful thoroughfare in old Liège owes its name to its location outside the first city wall built under the orders of Prince-Bishop Notger at the end of the 10th century. From the 14th century, Hors-Château was occupied by the nobility and religious institutions. Private mansions and houses decorated with emblems dating from the 17th and 18th centuries line this street.
The street is also the access point to archetypal cul-de-sacs and alleys whose quietness contrasts with the bustle of the nearby city centre.