“It redefines the restaurant concept in Dubai,” said Marc Dardenne, CEO of Emaar Hospitality, which operates the restaurant.

At.mosphere in Dubai's 828-meter building is “one of the finest luxury dining and lounge experiences in the world,” said Emaar Hospitality Group, an arm of giant property developer Emaar.

At two levels below the tower's observation deck, the “world's highest restaurant” can host “over 210 guests and features a spacious arrival lobby, a main dining floor, private dining rooms and display cooking stations.” At.mosphere has out shadowed the CN building in Canada to become the tallest restaurant in the world.

Adorned in mahogany walls and ceilings, Adam Tihany furnishings, and floors of cafe au lait limestone and hand-tufted carpet, the restaurant has a stunning look.

“Every aspect of the restaurant has been carefully designed and executed — be it the elegant decor, warm ambience, food choice and service standards,” says Mohammed Alabbar, chairman, Emaar Properties.

In addition to apartments, offices and Italian designer Giorgio Armani's signature hotel, the building has an observation deck on the 124th floor, open to visitors at an entrance fee of at least 100 dirhams ($27) per adult.

Emaar spent $1.5 billion on the tower, named after United Arab Emirates (UAE) President Sheikh Khalifa bin Zayed Al-Nahayan who came to the aid of Dubai, hit by the global financial crisis.

Abu Dhabi extended a lifeline of $10 billion, on top of the same amount from the UAE central bank, to bail out Dubai's heavily-indebted state firms in 2009.