Vila Nova de Gaia, PRT
Their tour lasts around 20min and is quite informative for beginners. It is followed by a tasting of two Port wines. They sell their old empty oak casks to Glenfiddich. Calem is owned by [http://www.sogevinus.com/?lang=en Sogevinus], which also owns other well known brands such as Kopke, Burmester,
Listen to the audio guide for Cálem Free on WIP — starts by itself when you arrive, even with the screen off