Torre Latinoamericana, Mexico City

Before the Hotel de Mexico was built in the 1980s, this was the city's tallest building. Inaugurated in 1950, it has 3.000 public observation decks. Based on a design by Augusto H. Alvarez, it stands 181.33 meters high and is unique for its structure and foundations. Given the difficult terrain of seismic activity in the Valley of Mexico, it was proven sturdy by having withstood the violent earthquakes of 1957 and 1985. The first 37 floors are office space, reserving the 38th floor for an aquarium and lofty serpentarium. There are restaurants, bars, and other recreational activities available. Free admission.