In 2013 I was helping as a volunteer at the ESBG festival in Lodz, EUROPEAN STRAW BALE GATHERING. This is a festival that takes place every two years, the European convention of professionals in the field of building with the use of straw bales and other natural materials. Each time, it takes place elsewhere in Europe. In 2013 it visited Lodz. Hosts were: Cohabitat Foundation and National Association of Natural Building (OSBN). This was a great exchange of ideas and experiences in the field of natural design and construction.