The Panamericano has an amazing twenty-third floor bar, solarium, deck, and glass-encased swimming pool, offering incredible views of 9 de Julio, the Obelisco, and the Teatro Colon. Even if you don't stay at the hotel, you are more than welcome to enjoy the views, and, for a small fee, the pool.
Address:
Av Carlos Pellegrini 551
At Corrientes
1009 Buenos Aires, Argentina