The KIO Towers, also known as the Gate of Europe Towers, are twin office buildings located in Madrid, Spain. They were constructed between 1989 and 1996 and officially opened in 1996. The towers are named after their initial owner, the Kuwait Investments Office (KIO), and they were the first inclined skyscrapers in the world. This landmark of Madrid's skyline is situated near the Plaza de Castilla. Each tower has 26 floors and stands tall at 114 meters (374 feet) with an inclination of 15 degrees, making them unique and an architectural marvel. The towers were designed by the American architects Philip Johnson and John Burgee and the construction was done by Fomento de Construcciones y Contratas. The exterior design of the towers is modern and sleek, with a steel and glass curtain wall facade. The inclination of the towers is not only an aesthetic feature but also provides shade, reducing the need for air conditioning and thus promoting energy efficiency. The two towers form a gateway, hence their alternative name, the Gate of Europe. The interior of the KIO Towers is as impressive as their exterior. The space is mainly used for offices, but there are also restaurants and a fitness center. The design inside is modern and minimalistic, with a lot of natural light coming in through the glass facades. One of the towers is owned by Bankia, a Spanish bank, while the other is owned by Realia, a real estate company. The KIO Towers are not only an important business hub but also an iconic symbol of Madrid and are often featured in films and on television. The KIO Towers are an example of innovative architecture and remain one of the most fascinating pieces of architecture in Madrid. They stand as a testament to the city's forward-thinking approach to urban design and its commitment to creating a sustainable future. In conclusion, the KIO Towers, with their unique inclined structure and modern design, are more than just office buildings - they are architectural landmarks that contribute significantly to the appeal and character of Madrid's cityscape.