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