The cooperation between Hermann-Lietz-Schule Schloss Bieberstein in Fulda and the Nepalese Organisation PAORC was established in 2011. Every year 10-20 students and teachers travel to Nepal for four weeks to take part in the construction of new buildings. These “Bottle Houses” are mainly made from mud, straw and empty beer bottles which serve as insulating material. This environmentally friendly method contributes to solving the trash problem in Nepal by paying people to collect large amounts of bottles and putting them into good use.