Train to the Clouds, the highest train in the world

The Tren a las Nubes ("Train to the Clouds") in Salta, Argentina, is one of the highest train routes in the world, reaching up to 4,220 meters (13,850 feet) above sea level. However, it is not the absolute highest; it ranks third or fourth globally, behind routes in China, Peru, and Bolivia.

? Overview of the Tren a las Nubes

• Location: Salta Province, Argentina

• Route: Runs from the city of Salta through the Quebrada del Toro valley to the La Polvorilla Viaduct.

• Altitude: Peaks at 4,220 m (13,850 ft) above sea level.

• Distance: Covers about 217 km (135 miles).

• Journey Time: Roughly 8 hours, including stops.

• Experience: Passengers ride through dramatic Andean landscapes, crossing 29 bridges and 21 tunnels.

? Why It’s Famous

• Engineering Feat: Built over 27 years to connect Argentina and Chile across the Andes.

• Tourist Attraction: Today it’s a heritage train, offering panoramic views of valleys, deserts, and mountains.

• Iconic Stop: The La Polvorilla Viaduct, a towering steel bridge at 63 meters high, is the highlight of the trip.

? Comparison with Other High Trains

⚠️ Things to Know Before Riding

• Altitude Sickness: At over 4,000 m, some passengers may feel shortness of breath or dizziness.

• Seasonality: Best experienced during Argentina’s dry season (May–November).

• Tourist Focus: The train now operates mainly for sightseeing, not regular transport.