Burj Khalifa, UAE
The Burj Khalifa is the tallest tower in the world standing 848 meters tall with 200 storeys. However, the observatory deck is on the 124th level. This tower, which is an extraordinary union of engineering and craftsmanship, is also home to hundreds of restaurants, hotels, residence and office. Due to its structure, it is described as ‘Vertical City’. The building took 1,325 days to be completed and was inaugurated on January 4, 2010. Burj Khalifa has annual visitors of more than 1 million people.