Embark on an adventure to the heart of Portugal’s Douro Valley, surrounded by terraced vineyards that climb high above the dramatic confluence of the Douro and Tedo rivers. There lies an 18th-century estate, Quinta do Tedo. Enjoy a full tour of Quinta do Tedo, which includes explanations of the vineyards and the olive orchards. Learn more about Porto and red wine production, foot treading in the lagers, aging in the 18th-century cellars, bottling, and hand-labeling.  At the end of the tour, taste the Quinta do Tedo's Portos and red wines overlooking the Douro River in the renovated 18th-century tasting room. The Quinta’s 100% estate-grown organic grapes come from 37 acres of class "A" vineyards, the highest rating from the Portuguese Instituto do Vinhos do Douro e Porto, comparable to France's Grand Cru.