More than a neighborhood with a park in it, Palermo has the feel of a park where some people happen to live. This wide, miles-long expanse of green open space along the waterfront exists within the city because it was once an enormous estate until the middle of the 1800s. While you'd need a long time to really see the entire complex fully, I have listed some must-see highlights.
The park contains the Rose Gardens, the Planetarium, the Patio, several museums, jogging trails, and far too many monuments to count. The area expands out beyond Jorge Newberry, the domestic airport, into the neighboring district of Belgrano. Easy to get lost in, you'll never need to worry, as cabs cruise the boulevards that cut through the park.