Next in our 21st-Century Architecture: 25 Years 25 Buildings series we examine SOM's Burj Khalifa – the most significant building completed in 2010 and still the world's tallest skyscraper. More about SOM's Burj Khalifa was the most significant building of 2010
The latest edition of our weekly Dezeen Agenda newsletter features an elevated circular metropolis proposed to encircle the Burj Khalifa in Dubai. Subscribe to Dezeen Agenda now! More about Dezeen Agenda newsletter features an elevated circular metropolis proposed for Dubai
Architecture studio ZN Era has envisioned a skyscraper called Downtown Circle, which would be built around the Burj Khalifa in downtown Dubai. More about ZN Era proposes encircling Burj Khalifa with an elevated "continuous metropolis"
Adrian Smith, one of the architects behind the world's present and future tallest buildings, has dismissed claims that we are entering the era of the "megatall" skyscraper (+ slideshow). More about "Conflict and financial turmoil" will stall megatall skyscrapers says Burj Khalifa architect
Competition: we've teamed up with Lego® Architecture to give away five Lego models of the world's tallest building, the Burj Khalifa. More about Competition: five Burj Khalifa Lego® sets to be won
Here are some photos of the tallest building in the world, the Burj Khalifa by Chicago office Skidmore, Owings and Merrill, which opened in Dubai earlier this month. More about Burj Khalifa by SOM