Costa Concordia upright a year later

After 20 months in the  water, the capsized cruise liner Costa Concordia has finally been set upright. It took engineers around 19 hours to roll the 114,000 ton ship onto a platform in what has been described as "a perfect operation". This is the first time such an operation has been attempted on a ship of this size.

Read: Costa Concordia righted after massive salvage effort

But the work is not over yet. This is just the first step in removing and scrapping the nearly 1000 foot ship, which won't be moved until next summer.

Watch this piece by CNN's Matthew Chance about the gruelling process, and what the next steps are.