- Torralba
- Tiouli tunnel
- Tiouli tunnel
- Pomarão
- Pomarão
- Levkovtsi
- Levkovtsi
- Levkovtsi
- Levkovtsi
- Guadiana Railway
- Guadiana Railway
- Elbtunnel, southern building
- Elbtunnel, northern building
- Elbtunnel
- Elbtunnel
- Elbtunnel
- Elbtunnel
- Elbtunnel
- Chanza Canal
- Canfranc
- Canfranc
- Canfranc
- Canfranc
- Bobadilla - Algeciras line