Several tiny medieval passageways burrow beneath the house fronts of Rue Hors Chateau, most disappearing into picturesque hidden yards, but well worth exploring. However, the Montagne de Bueren continues steeply up all the way to the top of the former citadel hill in 373 steps. At the top is a war memorial and city panorama point behind which are the grassy 5m-tall brick fortress bastions. Disappointingly, the summit is a hospital.
It’s less strenuous to climb the narrow side stairways that lead past Nun’s restaurant-bar into the gated Terraces des Minimes. Formerly the terraced fruit gardens of a series of religious orders, this is now a lovely hillside park-garden with great views that survey the incredible chaos of Liège’s rooftops.