5. The Shard in United Kingdom
It took just 3 years to build The Shard which features 44 lifts (including some double-decker lifts) and a leg aching 306 flights of stairs! You do not want to be in this building during a fire drill that is for sure!
6. Eurasia in Russia
While it did take 7 years from start to finish this giant-sized office block has 72 floors and is a beautiful combination of classical and modernist styles.