A list of the tallest buildings under construction, with photos. What is the future tallest building in the world? For now it will still be the completed Burj Khalifa in Dubai, but India Tower, in Mumbai, currently scheduled for completion in 2016, comes in at a close second place. This list of skyscrapers under construction is a good indicator of the most prosperous places on earth. Why? Because skyscrapers are a structure typically built only during healthy economic times. You will find India Tower and plenty of other future buildings within this list of the tallest skyscrapers under construction.