House of Pandu Monument · Caso, Nalón, Asturias Image of Caso, not of the place itself. The Casa de Pandu, in the Asturian concejo of Caso (Nalón), is a rural stone manor house of the 16th century: a typical two-storey rustic house, built in masonry with ashlar blocks at the corners, windows and frames, and with a round-arched gateway at the main door. Reformed several times, it has had the most varied uses over time -Inquisition jail, town hall, school- and remains one of the oldest civil buildings in the concejo. Photo: Javier Pérez López (CC BY 3.0) What to see and do in Caso