The doors and windows were made from wood processed by a special aging technique. The wood was immersed in water for several years, then dried and aged for dozens of years. This slow and unique process ensured that the wood would become resistant to change and deformation.  Windows and doors are subject to heat and dryness from the inside, and cold and humidity from the outside. This outstanding technique had been used to best prepare the wood for its inner and outer life, ensuring it became durable and weatherproof for many decades.These doors and windows have been made by top professionals, applying ancient carpentry techniques, without the use of bolts, glue and other materials which have failed the test of time and esthetics.