Buenos Aires' contemporary urban landscape as we know it today provides a tempered mix of historical and recent construction projects. As one of the most beautiful cities in South America, it's wide boulevards and grand buildings, based on European models, have morphed to embrace the needs of a modern metropolis.
These images show just how profoundly time affects our cities (and how centuries-old foliage can powerfully transform spatial perception).
Browse the 20 interactive images of Buenos Aires before and after.