Shell Downstream. Shell Downstream is one of the worldâs largest businesses in the production and. distribution of petroleum and chemical products. In 2003, Shell embarked upon a radical change to its business model from a country centric approach to a global product line. basis.hell Downstream. Shell Downstream is one of the worldâs largest businesses in the production and. distribution of petroleum and chemical products. In 2003, Shell embarked upon a radical change to its business model from a country centric approach to a global product line. basis.
The Carlton Centre is a 732 ft or 223 meter tall building in Johannesburg, South Africa. It has been the reigning champion of tallest buildings in Africa for 39 years to this point.
Since its completion in January 2010, the tallest building in the world has been the Burj Khalifa in Dubai, United Arab Emirates. However, the building called Kingdom Tower, being built in Jeddah, Saudi Arabia, is expected to be completed in 2019 and would move Burj Khalifa to the second place spot.