Introduction to Sandeman Wine Cellar: Sandeman Wine Cellar (Sandeman) is the most famous one in Porto, known as the "Wine Capital", and is also one of the largest wine cellars in Portugal. This wine cellar has one of the largest wine varieties in the country, so it is known as the "wine cellar museum". The wines produced by Sandman seem to represent the entire Port wine and even the country of Portugal, and its iconic black cloak has become a famous trademark known to the world.