Hidden in the clouds for 13 years, the world’s tallest residence in the Burj Khalifa, Dubai, is finally for sale.

Next in our 21st-Century Architecture: 25 Years 25 Buildings series we examine SOM's Burj Khalifa – the most significant ... 148th floor to take in sweeping views of the cityscape.

Burj Khalifa is also the tallest free-standing structure in the world and home to the highest outdoor observation deck in the world. You know what that means: gorgeous views. Visitors are invited ...