Located at the south west end of the land, Colonia do Sacramento is the oldest city in Uruguay or err... mmm, maybe the oldest city in Uruguay, or one of the oldests cities in uruguay, anyway. The fact is that in 1680 the portuguese founded this city, and that's prior to the foundation of our capital Montevideo, in fact Montevideo was founded as a countermeasure of the Spanish empire (not darth vader's one) to stop the portuguese advance. The history of Uruguay's colonization is a continuous struggle between the spanish forces against the portuguese, with some intrusion of the british (when not?) to take over this chunk of land in the world. Colonia went from portuguese creation, to spanish domination, then back again to portuguese or brazilian, depending on the year, and back again, times N, until Uruguay as an indepenant country was born. This is why the historical part of the city has blend of spanish and portuguese architectural styles which is kinda nice.
The historical parts of the citiy were declared common heritage of the human kind by the unesco, some time ago, and it's right now one of the turistic spots of the country.
The historical part of the city it's small, you can make it by feet, it keeps it's original disarranged cobblestoned streets, and houses.
It's a good place for example to spend a weekend in couple, as it's beautiful, quiet, and there lots hotels in the whole area, some of them reasonably cheap and good. Let's put it this way it's not famous for it's wild night life. ...