The N222 road goes along the Douro river in Portugal (Western Europe) across the vineyard fields (where the grapes of the port wine grow)
and has been considered by AVIS as one of the best roads in the world (very close to the perfect ratio of 10 seconds straight by 1 turning)...
Not sure if it's the best one but it's surely perfect to do on a Spyder.

The video.


The pictures.




















And the map.
http://andardecoiso.pt/pt/site/n222-...-mundo/roteiro