In Madeira it is very challenging to deal with the high humidity and to avoid mold growth in buildings above a certain sea level. Thanks to the high pH value of lime, it is preferable to cement. Furthermore, the lime mixture makes the structure able to breath and also keeps many insects away from the interior. Lime was used a time ago to build on the island and the “good” houses were described as “made of lime and stone”. In summer the buildings stay fresh thanks to the lime, it feels like air conditioning and in winter wood stoves provide cozy warmth. The walls store the heat and slowly release it again. Due to the round design, the heat stays mainly in the rooms with the stoves and thus ensures a pleasant temperature difference to the bedrooms, where a slightly lower temperature is desired.