In Switzerland, commoners' organisations such as corporations of citizens, corporations, bourgeoisies and patriziati own extensive land areas. This is particularly pronounced in the mountain regions, where their ownership of alpine pastures and forests sometimes comprises considerable shares of the cantonal territories. Throughout Switzerland, almost two thirds of alpine pastures and forests are owned by corporations and communities. In addition, as (co-) owners of real estate, tourist facilities, cultural institutions and energy facilities (e.g. hydropower plants, wood heating plants), these organisations are important political and economic actors. Although these newer sources of income generate stable financial returns, many commoners' organisations, especially smaller ones, are under economic pressure as relative prices in alpine farming and forestry have declined sharply since the middle of the 20th century