Rueda Abbey
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Rueda Abbey or Rueda de Ebro Abbey is a former Cistercian monastery in Sástago in the Ribera Baja del Ebro comarca, province of Zaragoza, Aragon, Spain, 74 kilometres to the south-east of Zaragoza on
Panorama of the abbey buildings
Main entry.
Interior view.
Central heating
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A central heating system provides warmth to a number of spaces within a building from one main source of heat.
A condensing boiler
Hot water central heating unit, using wood as fuel
Ruins of the hypocaust under the floor of a Roman villa at La Olmeda, Province of Palencia (Castile and León, Spain)
Sylvester's warm-air stove, 1819