The Burj Khalifa (Arabic: برج خليفة for "Khalifa Tower") is a supertall skyscraper in the "Downtown Dubai" area of Dubai, United Arab Emirates. The building is part of a huge development located at the "First Interchange" (aka "Defense round-about") along Sheikh Zayed Road at Doha Street. Skidmore, Owings & Merrill LLP (SOM) of Chicago is the lead architect, structural engineer and mechanical engineer of the Burj. George J. Efstathiou of SOM is the Managing Partner on the project, while Adrian Smith, formerly of SOM, was the Design Partner. Third Party Review has been performed by CBM Engineers Inc. It is the tallest structure in the world.