Rhodopi Mountains
Rhodopi Tourist Information
Guesthouse U Nico, Orehovo

Green architecture
Centre de recherche architecture en terre CRATerre
Centre for Alternative Technology CAT
German Association for Building with Earth (Dachverband Lehm)
VPBA Architects

Ecovillages and sustainability
Global Ecovillage Network
BioRegional - UK
Local governments for sustainability
UN Best practices and local leadership
Forum for the Future: UK sustainable development charity