In fact, the list of the world's three highest include...
Even though the service is currently suspended (until March , 2008), due mainly to restoration of tracks and carriages, the tren de las nubes was officially inaugurated in 1948, but it wasn't until the 1970s that began receiving international tourism.
So please check with your Travel Agent to confirm and don't forget to book your seat well in advance, as the train can carry up to 640 passengers only.
Today it's the biggest attraction in the region, and receives yearly well over thirty thousand visitors that come for the ride.
A journey of 134 miles (219 km) that begins once a week at General Belgrano station in the city of Salta and takes around 17 hours to complete - from 7am to midnight.
Due to the height at which the train runs, it's fairly common to see clouds under the bridges, hence its name.
It goes through 29 bridges, 21 tunnels and 13 viaducts, among other landmarks.
The tren de las nubes snakes its way up to Quebrada del Toro gorge, towards San Antonio de los Cobres - the most important town in the Puna Salteña.
San Antonio de los Cobres owes its name to Sierra de Cobre (Copper Hill).
Apart from its mining resources, the town is famous for its weaving, clothing weaved out of alpaca, llama and vicuña wool.
So the actual circuit goes from Salta's Lerma valley to Alvarado, Cerrillos and Rosario de Lerma to Campo Quijano, door to the Andes, and start climbing Quebrada del Toro gorge.
You'll see wonderful landscapes throughout the ride, from thick lush vegetation to the deserted high plains of the Puna.
From then on, Diego de Almagro until San Antonio de los Cobres - 3,774 meters above sea level - reaching its highest point after Mina Concordia, at La Polvorilla viaduct - 4,230 meters above sea level.
The following it's the complete list of stations starting from the city of Salta, together with their height above sea level...
Salta city was founded in 1582 by Spanish conqueror Hernando de Lerma.
Beautifully preserved Colonial city, it's known as "Salta La Bella" - Salta The Beautiful.
Among its landmarks of Colonial architecture we find...
You must try the exquisite "empanadas" Salteñas - pastry filled with beef and cheese, with a glass or two of Torrontes wine, from the wine region of Cafayate - second biggest city in Salta province.
You'll love to visit the Calchaquies valleys as well, with millennial rock formations that are a feast to the eyes.
Among the most recognizable we find...
It has superb landscapes, lots of gaucho and Spanish traditions, wonderful samples of Colonial architecture, and of course, world famous tren de las nubes...
So forget about planes, just catch the tren de las nubes and you will be flying like a condor over the magnificent Andean range of South America...
For more info on the tren de las nubes and to book your ticket visit trenalasnubes.com.ar
There are regular flights from Buenos Aires'Aeroparque to the city of Salta, even long distance buses departing from Retiro Bus Station if you have time to spare.
For flights and airport info, please visit Argentina airports.
Accommodation in the city of Salta vary from regular Hostels to three-four Star Hotels.
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