The country with the world's tallest building is the United Arab Emirates, which is home to the Burj Khalifa. Standing at 828 meters (2,717 feet), this architectural marvel is located in Dubai. Completed in 2010, the Burj Khalifa symbolizes modern engineering feats and serves as a hub for business, leisure, and luxury accommodations. Its observation decks attract millions of visitors each year, providing stunning panoramic views of the cityscape and desert beyond.