There are tours that are brought specifically to this business to showcase local artisan products…read morespecifically gold plated metal jewelry and forged knives. There were two artisan crafts : the intricate jewelry and a sword forging demonstration
I saw the same designs of metallic jewelry at a gas station : identical packaging, price and heft, so it seemed like still something mass produced, but these bear a product stamp that certifies them as originally made in Portugal.
Got a chef's knife and decorative handled knife for my son and son in law.
Jewelry is also quite intricately crafted, inlaid or filigree style.
A copy of your passport is useful for recovering the VAT tax refund if you can find one at the local airport, that is! I'll have to mail mine in, Munich did not process receipts from another country.