Take a boat from Buenos Aires and sail across the Rio de la Plata to reach Montevideo, the capital of Uruguay. Spend a day strolling cobblestone streets and admiring centuries-old architecture in a combination of guided sightseeing and free time.
Meet up with your guide for the day outside your hotel, where you are picked up and taken to the ferry. Grab a seat on a spacious boat and throw off the mooring lines while your captain sets a course for the country across the "Sweet sea"—what the first settlers called the Río de la Plata. When you arrive, explore the neighborhood's museums, parks, and cathedrals, snapping photos as you listen to intriguing commentary about the area's history.
Enjoy an afternoon bobbing between elegant waterfront mansions and charming marinas before you tie up at a nearby dock. Check out Montevideo's sights on your own or opt to grab lunch at a local restaurant before getting on the boat and heading back to Buenos Aires.