Spanish 102 B+C: The Wikipedia Question... can I use it?

In researching a city, one of the first things you might do is head to an encyclopedia or Wikipedia to get a sense of what the city is about.  This is a good strategy!

For an academic report or presentation, however, you usually wouldn't cite Wikipedia itself, but rather you would cite the references that provide whatever information you're interested in.  Doing this allows you and your professor to verify that your information is coming from a reliable source.  Have a look at the below image, taken from the Madrid Wikipedia page, for an example of where to find references in a Wikipedia.

If for whatever reason you want to cite an entire Wikipedia page (for instance, because there are so many basic facts on it that it wouldn't make sense to cite each of the facts individually), always cite the Permanent link version of the page.  This will provide a snapshot of the Wikipedia page in time, which is better for citation purposes than just citing a page that might (and will) change tomorrow.