BootsnAll Travel Community

Hey guys,
I am in Montevideo until Monday, and then heading to Colonia del Sacramento before crossing to BA. I was wondering if you had any suggestions on what has to be seen in these two places.
I went to the tourist office today, and they told me the usual things ( gave me a map and told me about famous monuments and museums) but i`m not too much into that, i`d rather know about a good trail for a long walk to do tomorrow all day for example.
Lucie.