Baiyoke Tower II vs Willis Tower

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Baiyoke Tower II (Thai: ????? 2; RTGS: Bai Yok Song) is an 88-storey, 309 m (1,014 feet ) skyscraper hotel at 222 Ratchaprarop Road at the Ratchathewi District of Bangkok, Thailand. It's the third tallest building in the city, after MahaNakhon and Magnolias Waterfront Residences in ICONSIAM. The construction comprises the Baiyoke Sky Hotel, the tallest hotel in Southeast Asia and the seventh-tallest all-hotel structure in the world.With the antenna included, the building's height is 328.4 m (1,077 feet ), and features a public observatory on the 77th floor, a bar calledRoof Top Bar & Music Lounge on the 83rd floor, a 360-degree revolving roof deck on the 84th floor and the hotel provides 673 guest rooms.

Construction on the building ended in 1997, with the antenna being added two decades later. The Baiyoke Sky Hotel website notes the height without the antenna as 309 m (1,014 feet ), but the Council on Tall Buildings and Urban Habitat (CTBUH), Emporis and SkyscraperPage note it as 304 m (997 ft).

Source: Wikipedia

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The Willis Tower (formerly and informally: Sears Tower, its title until 2009) is a 110-story, 1,450-foot (442.1 m) skyscraper in Chicago. At completion in 1973, it surpassed the World Trade Center in New York City to become the tallest building in the world, a title that it held for nearly 25 years; it was also the tallest building in the Western Hemisphere for 41 years, before the new One World Trade Center surpassed it in 2013. While it held the title of'Tallest Office Building' before 2013, it dropped the title of'Tallest Man-Made Construction' after only 3 decades. The CN Tower in Toronto, which functions as a communications tower, took over the title in 1976. The Willis Tower is considered a seminal accomplishment for engineer Fazlur Rahman Khan. It is currently the third-tallest construction in the USA and the Western hemisphere -- and the 23rd-tallest in the world. Annually, several million people visit its observation deck, the highest in the USA, which makes it one of Chicago's most popular tourist destinations. The arrangement was renamed in 2009 by the Willis Group as a term of its lease. As of April 2018, the building's largest tenant is United Airlines, which moved its corporate headquarters in 77 West Wacker Drive (then the United Building) in 2012, occupying around 20 flooring. Other major tenants include the building's namesake Willis Towers Watson and law firms Schiff Hardin and Seyfarth Shaw. Morgan Stanley plans to move into the construction in 2019 and become its fourth-largest tenant by 2020.

Source: Wikipedia