1. The Burj Khalifa is a skyscraper located in Dubai, United Arab Emirates. It is currently the tallest building in the world, with a height of 828 meters (2,716 feet). The building was completed in 2010 and was designed by the Chicago-based architectural firm Skidmore, Owings & Merrill. The Burj Khalifa features a mix of residential, commercial, and hotel spaces, with the highest observation deck in the world located on its 148th floor. The building also includes several outdoor terraces, a fitness center, a swimming pool, and a variety of restaurants and lounges. The construction of the Burj Khalifa was a massive engineering feat, requiring innovative approaches to address challenges such as high wind loads and extreme temperatures. The building's design incorporates several sustainable features, such as a cooling system that uses recycled water, and its construction used eco-friendly materials. The Burj Khalifa has become an iconic landmark of Dubai and a symbol of modern e...