Uruguay is usually second banana to Argentina, most visitors crossing the river Plate (Rio Plata) via Buquebus, the high speed ferry from Buenos Aires. There's four main points of interest in this country, which has a Mediterranean climate...Colonia: a restored Portuguese colonial city on the coast (direct ferry from Buenos Aires)
Montevideo, the capital.
Punta del Este: the pricey resort city jutting into the Rio Plata.
Rocha: a region of unspoiled beaches on the Atlantic
Uruguayans speak a Castilian Spanish very similar to that of Argentina, and the culture is quasi identical (don't tell them that, however!).