Roots EarthPorto, Portugal
Arrábida Bridge
A vast reinforced-concrete arch carrying road traffic across the lower Douro, opened in 1963 to a design by engineer Edgar Cardoso. Its 270-metre span was the longest concrete arch in the world at the time, and visitors can now climb its curve above the river.
What the app adds
Roots Earth has a longer story for Arrábida Bridge, with a choice of female or male voice. Download the city audio to listen offline. No account is needed.
Location
Coordinates: 41.14756, -8.64034