The bit that links the two towers at the 41st and 42nd floors is aptly named the skybridge. The 41st floor is where you have to change elevators to go up higher. These days you have to get a free pass to stand on the skybridge – 170m off the ground – there are 1700 available a day, but suspended that high and weighing 750 tonnes you can see why they're trying to reduce wear and tear... One of the coolest design features of the towers are the double decker lifts – the top floor dropping people off on the even floors, the bottom taking the odd. Recent reviews say get there early to make sure you get one of the free passes.

Petronas, from the title, accommodates most of Tower One, Tower Two has a host of residents and below that is a shopping centre and the home of the local Philharmonic Orchestra.