"The Dom Luís I Bridge (Portuguese: Ponte de Dom Luís I), or Luís I Bridge, is a double-deck metal arch bridge that spans the River Douro between the cities of Porto and Vila Nova de Gaia in Portugal. At its construction (1886), its 172 metres (564 ft) span was the longest of its type in the world. ..." https://en.wikipedia.org/wiki/Dom_Lu%C3%ADs_I_Bridge
"The Guindais Funicular (Portuguese: Funicular dos Guindais) is a funicular railway in the civil parish of Cedofeita, Santo Ildefonso, Sé, Miragaia, São Nicolau e Vitória, Portuguese municipality of Porto. ...
As part of a larger initiative to improve the transport infrastructure of Porto, a new funicular and station was inaugurated on 19 February 2004, following the same line as before (1891). ..."
Very industrial look. I love bridges and where I live there are many old steel bridges designed by Conde McCullough which are iconic structures. https://en.wikipedia.org/wiki/Conde_McCullough
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