WP:CITIES assessment
I've changed this article's assessment to C-class from Start-class. It's clearly no longer a start anymore, and developing some clear structure and order. Some of the language is still a little choppy in places, and could use a good copyedit by a native english speaker. The history section seems to be a little heavy on the subsections, and some of those could be combined. Some of the subsections overall could have shorter and more concise titles as well. There are a good number of photos in the article, which is good, but they seem to be cluttered over on the right side of the article, and should probably be placed a bit more evenly. Also, many of the image captions are very, and should be shortened as well. Photo captions, as a rule, shouldn't really introduce any new content to the article, and should be brief enough to simply describe the photo they're attached to. All photos should also be relevant to the article text and sections that they are placed in as well, with some sort of text in the main article discussing it.

A couple of wiki guidelines and such to help out: WP:LEAD for improving the lead section, WP:CITE for the formatting of citations, and WP:MOS for general manual of style information. While there's no specific guideline at WP:CITIES for South American cities, editors might find the US city guideline to have useful information nonetheless. It may also help to take a look at the Good Article criteria as well as the Featured Article criteria, for tips on moving towards those review/rating classifications.