The Cologne Triangle, also known as the KölnTriangle, is a 100-meter high skyscraper located in Deutz, the right-bank city district of Cologne, Germany. It was designed by Dörte Gatermann, a renowned German architect, and was completed in 2006. The building with its 29 floors has become one of the most prominent landmarks of the city. The exterior of the Cologne Triangle is defined by an elegant structure of glass and steel. Its reflective glass facade mirrors the city’s skyline, creating a visually stunning effect. The design of the building is triangular, which is where its name derives from. Each angle of the triangle points towards a significant city district, symbolizing the unity and connectivity of the city. Inside, the building houses various offices, mostly of media and communication companies. However, what makes the Cologne Triangle a popular destination for locals and tourists alike is its panoramic observation deck on the 29th floor. This deck provides a breathtaking 360-degree view of the city, including the iconic Cologne Cathedral, the Rhine River, and the Hohenzollern Bridge. The Cologne Triangle is also known for its sustainability efforts. It was the first high-rise building in Germany to receive the “Green Building” certificate from the EU Commission for its efficient use of energy. An interesting fact about the Cologne Triangle is that it was specifically designed to be lower than the Cologne Cathedral, which is the tallest twin-spired church in the world, to respect the historical significance of the cathedral. This is a testament to the city's commitment to preserving its historical heritage while embracing modern architectural designs. The Cologne Triangle is not just a building, but a symbol of the city's vibrant culture and its amalgamation of history and modernity. It is a must-visit for anyone who wants to experience the mesmerizing beauty of Cologne from a unique perspective.