Santiago, Chile - met a girl from my hometown randomly on the street. Very westernized city. It's like NYC's latin love child. Being on central time made it such an easy adjustment. Practice up on your Spanish though!
Parque OHiggins - Parque O'Higgins is home to Fantasilandia, an amusement park with roller coasters and other thrill rides. There also are two beautiful gardens if you're looking for a calmer, quieter experience.