The Repsol-YPF tower is a corporate high-rise building designed by internationally recognized architect César Pelli constructed in the Puerto Madero barrio (district) of Buenos Aires, Argentina. Construction began in 2005, and the office building was completed in September 2008. The building is 160 metres (520 ft) tall and has 44 floors. It was, upon completion in 2008, the tallest office building in Argentina, and the third tallest overall.