Wasps are remarkable architects, constructing nests out of very different materials. Many insects will use wood pulp, which is essentially paper. However, there is also a large group of wasps which gather up mud.
The great potter wasp builds its nest onto plastered or raw stone walls, close to the ground or in great height. A nest, made of mud and wet sand, includes several cells which receive one egg each and small caterpillars to feed the larva. They have been paralyzed with the venom of their stinger and, as the prey does not die, it is in perfect condition for when the larva hatches in the autumn.