If you're a tourist, you must visit this place! It's one of the most important places in Santiago…read moreand it's got a ton of history. Also, its architecture is wonderful: this train station has an interesting european style that seems frozen in time.
Not only the trains make this place fascinating, but also the shops around. There are many traditional shops with beautiful crafts. You can look all you want, but be careful if you want to take photos. Security there is not very good and you can be mugged easily.