#1 Metropolitan Cathedral of Buenos Aires (Buenos Aires)
The Metropolitan Cathedral of Buenos Aires is truly a unique Argentine landmark. From the outside, it looks more like an ancient temple with its neoclassical columns. This site remains the principal Catholic church of Buenos Aires and the seat of the archdiocese. Much like the French Pantheon, it holds the tombs of several national heroes. Interestingly, Pope Francis served as its archbishop from 1998 to 2013.