The tallest building in the world is the Burj Khalifa, located in Dubai, United Arab Emirates. Completed in 2010, it stands at a height of 828 meters (2,717 feet) and has 163 floors. The building is known for its unique design and impressive engineering, making it a prominent landmark in the city. The Burj Khalifa features a mix of residential, commercial, and hospitality spaces. It includes observation decks that offer stunning views of the surrounding area. The building's construction involved advanced technology and materials, showcasing the capabilities of modern architecture and design.