Train to the Clouds

Argentina's Train to the Clouds (Tren a las Nubes) is one of the world's great railway journeys, climbing from the arid plains of Salta into the high-altitude Andes. This engineering marvel snakes through 217 tunnels, over 29 bridges, and reaches a dizzying 4,220 metres (13,845 ft) at the La Polvorilla viaduct. The journey is a sensory feast: the air thins, the landscape shifts from cactus-studded desert to stark, snow-dusted peaks, and the sky becomes an impossibly deep blue. It's a bucket-list experience for rail buffs, adventure travellers, and anyone who wants to feel the romance of the Andes.

Highlights & What to See

• La Polvorilla Viaduct – the highest point of the journey, a dizzying curved trestle bridge where the train pauses for photos. The views of the surrounding altiplano are mind-blowing.
• Quebrada del Toro – a dramatic red-rock canyon that opens the journey, with pre-Columbian ruins and tiny adobe villages dotting the valley floor.
• San Antonio de los Cobres – the last town before the viaduct, a high-altitude mining settlement where you can buy llama wool crafts and feel the thin air.
• Altoandina landscapes – vast salt flats, volcanic peaks, and herds of vicuñas (wild llamas) as the train climbs above 4,000 m.
• Salta city – the journey starts here; spend a day exploring its colonial plaza, museums, and excellent empanadas before boarding.

Suggested Time to Spend

The full round-trip from Salta lasts about 16 hours (departing early morning, returning late evening). Most travellers book the journey as a standalone day trip, but it's worth adding a night in San Antonio de los Cobres or staying in Salta for a day or two to acclimatise and soak up the city's charm. The train runs seasonally (typically April–November), so check the schedule well in advance.

Nearby Areas Worth Combining

• Salta – the colonial gateway city, with its beautiful cathedral, cable car up Cerro San Bernardo, and lively peñas (folk music venues).
• Cafayate – a wine region south of Salta known for its high-altitude Torrontés wines and stunning red-rock landscapes along the Quebrada de las Conchas.
• Humahuaca Gorge – a UNESCO World Heritage site north of Salta, with rainbow-coloured mountains (Cerro de los Siete Colores) and indigenous markets in Purmamarca.
• Los Cardones National Park – a protected area of giant cacti and pre-Inca ruins, perfect for hiking and wildlife spotting.
• San Antonio de los Cobres – the high-altitude town where the train stops; from here you can explore salt flats and hot springs.

Please check official sources for current details.