The technical infrastructure details in the old towns in Spain

Historic urban cities in most European countries are a very important evidence of the past life style. The cultural heritage of the last generations should be available to as much people as it is possible to give them information about the national history, art and culture. Nowadays people expectation for indoor climate and technical equipment are much higher than several years ago. It makes buildings’ owners to modernize them, but in a case of the historical parts of towns it could be difficult from a technical point of view or the result would reduce the architectural quality of the object. The paper shows the selected examples of technical improvements done in Spain.