Uruguay CIA Factbook
US State Dept
Wikitravel Uruguay

We traveled Uruguay in February 2008. We took the ferry across the Rio de la Plata from Buenos Aires. We spent two nights in Colonia de Sacremento. Visited Nuevo Palermo and Carmelo. Spent two nights in Montevideo.

We have a travel log of the trip in 2008.
And some photos. Additional photos on flickr.

Infomation I have found
http://www.guiacolonia.com.uy/