The developer of the world's tallest building in Dubai is planing to build an even taller tower in the Mideast commercial hub.
Emaar Properties Chairman Mohamed Alabbar says the new observation tower would be "a notch" taller than the Burj Khalifa. He wouldn't say by how much.
Unlike the Burj Khalifa, the new tower designed by Spanish-Swiss architect Santiago Calatrava Valls will not be a traditional skyscraper but more of a cable-supported spire containing observation decks, gardens and possibly other tourist facilities.
It is due to open by the time Dubai hosts the World Expo in 2020.
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