Chile, Argentina

Here's an ideal itinerary for 3 days in Chile and Argentina:

Day 1: Santiago, Chile

• Start your day with a visit to Cerro San Cristobal, a hill that offers stunning views of the city. You can take a funicular or hike up to the top.
• Next, head to the historic center of Santiago and explore the Plaza de Armas, the main square of the city. Here you'll find the Metropolitan Cathedral, the National History Museum, and the Central Post Office.
• For lunch, try some traditional Chilean cuisine at one of the many restaurants in the Bellavista neighborhood.
• In the afternoon, visit the Museo Nacional de Bellas Artes, which houses an impressive collection of Chilean art from the colonial period to the present day.
• End your day with a stroll through the Parque Bicentenario, a beautiful park located on the banks of the Mapocho River.

Day 2: Mendoza, Argentina

• Take a morning flight to Mendoza, a city known for its wine production and stunning Andean scenery.
• Start your day with a visit to the Parque General San Martin, a large park with beautiful gardens, lakes, and monuments.
• Next, head to one of the many wineries in the area for a tour and tasting. Some popular options include Bodega Catena Zapata, Bodega Norton, and Bodega Salentein.
• For lunch, try some Argentine steak at one of the many parrillas (steakhouses) in the city.
• In the afternoon, take a scenic drive through the Andes Mountains to the Aconcagua Provincial Park, where you can see the highest peak in the Americas.
• End your day with a relaxing soak in the Termas Cacheuta hot springs, located about an hour outside of Mendoza.

Day 3: Valparaiso, Chile

• Take a morning bus or train to Valparaiso, a colorful port city located about 2 hours from Santiago.
• Start your day with a walking tour of the city's historic center, which is a UNESCO World Heritage Site. You'll see colorful houses, street art, and stunning views of the Pacific Ocean.
• Next, take a funicular up to one of the many hills in the city, such as Cerro Concepcion or Cerro Alegre, where you can explore more of the city's charming streets and cafes.
• For lunch, try some fresh seafood at one of the many restaurants along the waterfront.
• In the afternoon, visit the Museo a Cielo Abierto, an open-air museum featuring murals and sculptures by local artists.
• End your day with a sunset cruise along the coast, where you can enjoy stunning views of the city and the ocean.

I hope this itinerary gives you a good idea of what to do during your 3 days in Chile and Argentina!