Green Key
www.green-key.org
The European Eco-label for Tourist Accommodation
(EU Flower)
www.eco-label-tourism.com
ISO 14001
www.iso14000-iso14001-environmental-management.com
Green Globe Certification
www.greenglobe21.com
ADAC Umweltsymbol
EMAS
europa.eu.int/comm/environment/emas/about/summary_en.htm
Nordic Ecolabeling: Miljömärkning av hotel
(Nordic Swan)
www.svanen.nu
BioHotels
www.biohotels.info
Blaue Schwalbe
www.vertraeglich-reisen.de
