Cinque Terre | Corniglia railway station and Manarola
Albula Valley | Landwasser Viaduct
Albula Valley | Landwasser Viaduct with Glacier Express
Albula Valley | Landwasser Viaduct
Albula Valley | Landwasser Viaduct
Semmering Railway and Rax
Semmering Railway | Krauselklause Viaduct
Semmering Railway | Krauselklause Viaduct
Aosta Valley with Leverogne and Arvier
Brig | Simplon Tunnel
Brig | Simplon Tunnel
Lötschberg Railway | Lüegilkin Viaduct
Lötschberg Railway | Lüegilkin Viaduct
Lötschberg Base Tunnel | Southern entrance
La Grande Chaloupe | Ancient railway tunnel
Lago di Lugano | Traffic lines
Lago di Lugano | Melide
Koralm Tunnel | Construction site
Moscow | Metro Kievskaya
Moscow | Metro Komsomolskaya
Valle Mendoza | Railway tunnel near Guido
Valle Mendoza | Túnel Caracoles