Portugal, Porto, Vila Nova de Gaia, Decorated tourist boat with passengers in transit and Rabelo cargo boats plus the Ribeira area of Porto in the background.

Portugal, Porto, Vila Nova de Gaia, Rabelo cargo boats on the River Douro with the Ribeira area of Porto in the background, Rabelo cargo boats were used for bringing wine from the vineyards in the Dou...

Portugal, Porto, Vila Nova de Gaia, Rabelo cargo boat on the River Douro with the Ribeira area of Porto in the background, Rabelo cargo boats were used for bringing wine from the vineyards in the Dour...

Portugal, Porto, Vila Nova de Gaia, Rabelo cargo boats on the River Douro with the Ribeira area of Porto in the background, Rabelo cargo boats were used for bringing wine from the vineyards in the Dou...

Portugal, Porto, Vila Nova de Gaia, Rabelo cargo boats on the River Douro with the Ribeira area of Porto in the background, Rabelo cargo boats were used for bringing wine from the vineyards in the Dou...

Portugal, Porto, Vila Nova de Gaia, Rabelo cargo boats on the River Douro with the Ribeira area of Porto in the background, Rabelo cargo boats were used for bringing wine from the vineyards in the Dou...

Portugal, Porto, Dom Luis I Bridge or Ponte de Dom Luis I, Double-deck metal arch bridge over the Rver Douro which was opened in 1886, Rabelo cargo boats on the River Douro in the foreground that were...

Portugal, Porto, Dom Luis I Bridge or Ponte de Dom Luis I, Double-deck metal arch bridge over the Rver Douro which was opened in 1886, Rabelo cargo boats on the River Douro in the foreground that were...

Portugal, Porto, Vila Nova de Gaia, The Teleférico de Gaia aerial gondola in motion high above the rooftops.

Portugal, Porto, Vila Nova de Gaia, 17th century Mosteiro da Serra do Pilar or the Monastery of Serra do Pilar with the Teleferico de Gaia aerial gondola.

Portugal, Porto, Dom Luis I Bridge or Ponte de Dom Luis I, Double-deck metal arch bridge over the Rver Douro which was opened in 1886 and is seen here from the Torre dos Clerigos or Clerigos Tower.

Portugal, Porto, Dom Luis I Bridge or Ponte de Dom Luis I, Double-deck metal arch bridge over the River Douro which was opened in 1886 and is seen here from the Ribeira side of the river.