A duplex atop Dubai's Burj Khalifa is on the market for $49 million. Its agent said he's surprised how many Americans have ...

Within a three-week period, Adrian Smith sketched out the original designs that would eventually become the tallest building in the world, the Burj Khalifa. In the early 2000s, he was approached ...

Located on the two highest residential floors of the Burj Khalifa, one of the world's tallest buildings, the duplex measures ...