Torres del Paine as the best trekking place in South America

According to the website, qualifies as the first place the route of the W in Torres del Paine
They are 55 km. (approximately) those that must be traveled to be able to say, yes, I completed the "W" of the Torres del Paine , one of the circuits most desired by hikers worldwide.
Without a doubt the best place to do trekking in South America.