The Cuatro Torres Business Area, known as CTBA, is a significant feature on the skyline of Madrid, Spain. The area, whose name translates to "Four Towers Business Area," boasts four of the tallest skyscrapers not only in Madrid but in Spain. This remarkable landmark epitomizes modernity and progress and has become an icon of Madrid's economic strength. The history of the Business Area dates back to 2004, when construction began on the four towers. The completion of these architectural marvels took four years, with the last tower completed in 2008. The four towers are named Torre Cepsa, Torre PwC, Torre de Cristal, and Torre Espacio. Each tower has its unique characteristics and architectural style, designed by four different world-renowned architects. Torre Cepsa is the tallest of the four, reaching a height of 250 meters and 45 floors. Designed by renowned architect Norman Foster, the tower has a characteristic diamond-shaped design. The Torre PwC, on the other hand, stands at 236 meters with 52 floors and was designed by Carlos Rubio Carvajal and Enrique Álvarez-Sala Walter. It is distinguished by its cylindrical shape and is home to a 5-star hotel. Torre de Cristal, designed by Cesar Pelli, is the second tallest, standing at 249 meters, and is characterized by its glass facade, which gives it a crystal-like appearance, hence the name. Lastly, the Torre Espacio, designed by Henry N. Cobb, stands at 230 meters and is unique for its gradually changing shape from a square base to a circular top. The interior of these towers is just as impressive. The Torre Cepsa houses the offices of the oil and gas company Cepsa. The Torre PwC is a mixed-use building with the hotel Eurostars Madrid Tower occupying the first 31 floors and various offices above. The Torre de Cristal is primarily used as office space, with a stunning rooftop garden, while the Torre Espacio houses embassies and numerous multinational companies. The Cuatro Torres Business Area, apart from being an architectural spectacle, also houses a significant number of businesses, making it a vital economic hub in Madrid. It is not only an emblem of Madrid’s economic growth but also a symbol of its architectural prowess and innovation. This fascinating area, with its towering structures, continues to attract visitors and professionals from all over the world.