Porto

	Dom Luís Bridge The Luís I Bridge spans the Douro River between the cities of Porto and Vila Nova de Gaia.
	Dom Luís Bridge The bridge has two decks. The metro runs over the top deck while motor traffic uses the lower one.
	Dom Luís Bridge The bridge originally carried roads at both levels. Pedestrians can still cross either deck.
	Teleférico de Gaia Porto's cable car connects the Cais de Gaia, on the banks of the Douro, with the Jardim do Morro.
	Teleférico de Gaia The Gaia cable car opened in April 2011.
	Dom Luís Bridge At the time of its construction, the 172 metre span was the longest of its type in the world.
	Metro on Dom Luís Bridge Route D of the Metro do Porto occupies the top deck, which is also a pedestrian walkway.
	Arrábida Bridge The Arrábida Bridge is the most downstream bridge across the Douro River.
	Dom Luís Bridge Metro tracks on the upper level of the bridge.
	Metro on Dom Luís Bridge Metro route D, on the Dom Luís Bridge.
	Funicular dos Guindais The cars are engineered to maintain a constant gradient in the passenger cabin.
	Funicular dos Guindais The funicular first opened in 1891, but an accident forced its closure just two years later.
	Funicular dos Guindais After remaining closed for over a century, the system re-opened in 2004.
	Metro on Dom Luís Bridge This metro line opened in 2005. The upper deck of the bridge was previously used by motor vehicles.
	Infante Bridge The Infante Bridge opened in 2003, to replace the upper deck lane of the Dom Luís Bridge.
	Steps The city stands on a steep gradient, on the banks of the Douro River.
	Primitive Wall
	Funicular dos Guindais A passing section allows two cabins to operate on the otherwise-single line.
	Funicular dos Guindais Each of the cabins can carry 25 people.
	Steps
	Infante Bridge over Douro River The Douro is the third-longest river in the Iberian Peninsula, after the Tagus and Ebro.
	Calem Cellars 'Caves Calem' is one of the most famous wine cellars in Porto.
	Calem Cellars The cellars now also incorporate a museum.
	Calem Cellars The Calem Cellars sit underneath the Serra do Pilar Monastery.
	Funicular and staircase A choice of routes to the top.
	Funicular dos Guindais The funicular offers commuters and tourists an effortless way to climb the 61-meter rise.
	Metro on Dom Luís Bridge The Porto Metro uses modern Eurotram low-floor, articulated trams.
	Primitive Wall The Primitive Wall was probably built during the Roman Empire and rebuilt during the 12th century.
	Portuguese façade A small home beside the Dom Luís Bridge.
	Laundry in garden The Dom Luís Bridge affords local residents little privacy.
	Dom Luís Bridge View of the bridge from the northern side of the valley.
	Typical Portuguese façade
	Anjo fountain 18th century fountain, featuring a sculpture of São Miguel.
	Porto Cathedral The cathedral was completed in the 13th century.
	Porto sunset Silhouette of Porto's Primitive Wall.
	Porto sunset The sun sets over the Douro Valley.
	Flying in to sunset A flock of birds fly off in to the sunset.
	Dom Luís Bridge Looking south across the Dom Luís Bridge.
	Dom Luís Bridge The Serra do Pilar Monastery, to the left, served as a fort during the 1832 Siege of Porto.
	Dom Luís Bridge The top deck of the bridge is shared by pedestrians, cyclists and the metro.