The Vasco da Gama Bridge near Lisbon is one of the longest bridges in the world and the second longest bridge in Europe with over 17km. Only the newly built Crimean Bridge (Ukraine) is longer with 18.1km.
The bridge over the Tagus River near Lisbon (Portugal) was built from 1995 to 1998 and has a pretty modern look. If you are interested in architecture this seems to be a pretty good location for photography in Portugal.
photo by Emanuel Pereira
photo by Alexandre de Sousa
photo by eva chupikova
photo by Paulo Azevedo
photo by Pedro Filipe
photo by Alexandre Vidigal
photo by Adelheid Smitt
photo by Alexandre Vidigal
photo by Gunnar Heilmann
photo by Adelheid Smitt
photo by Philip Preston
photo by Jean-François Hosatte
If you are passing that bridge by car headed to Lisbon you have to pay a little toll (around 3 €).