The Musgum houses in Cameroon are made from compressed sun-dried mud. Their dome shape are very close to the catenary arch, the ideal mathematical form for maximum rigidity with a minimum of material. As well as being decorative, the raised pattern on the outside wall contribute to the drainage of rain and access to the top of the building for regular maintenance of the coating.
Decorated house in Niger. Niger is a landlocked country in Western Africa, named after the Niger River. It borders Nigeria and Benin to the south, Burkina Faso and Mali to the west, Algeria and Libya to the north and Chad to the east.
Tengboche, Nepal. Es un país de naturaleza montañosa en cuyo territorio se encuentran, total o parcialmente, algunas de las cumbres más altas de la Tierra, destacando el monte Everest (8 848 msnm), así como otros siete de los llamados ochomiles.