South America Round 2- Peru, Chile and Buenos Aires

Again, another ambitious route, but well worth it.
Peru
*Day 1- Lima
*Day 2- Flight to Cusco
*Day 3- Bus to Pisac and Ollantytambo
*Day 4- Aguas Calientes- Machu Picchu
*Day 5- Aguas Calientes- Machu Picchu
*Day 6- Cusco
*Day 7- Puno
*Day 8- Arequipa
*Day 9- Tacna
CHILE
*Day 10- Arica
*Day 11- Arica
*Day 12- Overnight bus to Atacama desert
*Day 13- San Pedro de Atacama
*Day 14- San Pedro de Atacama
*DAY 15- San Pedro de Atacama
ARGENTINA
*Day 16- Buenos Aires
*Day 17- Buenos Aires
*Day 18- Buenos Aires
*Day 19- Buenos Aires, night flight back to NYC