The most expensive building in the world is The Abraj Al Bait in Mecca, Saudi Arabia. At a cost of $15 billion the huge development is also one of the most striking aesthetically, completely changing the landscape of the city.
Although 2 fires were reported during the construction process, there were no worker fatalities recorded.
The Australian Parliament in Canberra is also on the list. The building cost $4.21 billion (adjusted for inflataion) and was opened in 1988.