One of the oldest port houses, Quinta do Noval is also arguably the greatest. It is unique among top port houses in that most of the ports are made from estate-grown fruit and, notably, all of the vintage Noval wines are from the single Quinta do Noval vineyard. In addition, it is difficult to elaborate on Quinta do Noval without mentioning Nacional, the legendary port made from a 6 acre parcel of ungrafted vines. When declared, only 200-300 cases of Nacional will be made, and instantly become the most sought after port in the world. Many vintages of Nacional are considered as the finest ports, and some of the finest wines, ever made.