At lunchtime, an endless lineup of food carts grill sandwiches for the hungry workers from nearby offices. They all offer the same things, and it's hard to see much difference between the carts, but some enjoy long lines while others are disquietingly empty.
Buenos Aires' trendiest residential neighborhood is probably its most bizarre. Even though it's physically close to the historic center, Puerto Madero almost feels like a completely different city.
A green oasis on the eastern end of the big city, the ecological reserve of the Costanera Sur offers an escape from the humdrum of daily life. Walking along of the reserve's paths, through wild growing pampas grass, it's difficult to believe that this is still Buenos Aires.