From the observation deck on the 44th floor of this soaring skyscraper, the Latin American Tower, you can take in fabulous views of the entire city. Buy a ticket for the deck at the booth as you approach the elevators. Tokens for the telescope are on sale here, too. You then take an elevator to the 42nd floor, cross the hall, and take another elevator to the 44th floor. An employee will ask for your ticket as you get off.