"The Zollverein industrial complex in Land Nordrhein-Westfalen consists of the complete infrastructure of a historical coal-mining site, with some 20th-century buildings of outstanding architectural merit. It constitutes remarkable material evidence of the evolution and decline of an essential industry over the past 150 years." -http://whc.unesco.org
An official postcrossing card from Tim...
Thank you so much for sharing with me this UNESCO card! =)