When the Petronas Towers were completed in 1998, they were declared the tallest buildings in the world. Although they can no longer claim this world record, the 452-metre towers in Kuala Lumpur are still the world’s tallest twin structures and resemble two silver rockets.
The design is heavily influenced by Islamic tradition, with the five tiers of the two skyscrapers representing the five pillars of Islam, and they reportedly took a total of six years and $1.6bn to construct. Since the 899,000 sq ft of stainless steel used in construction would attract a lot of heat, 590,000 sq ft of laminated glass was installed to reflect UV rays. Cleaning every single glass panel – the equivalent of 10 football fields – would take almost two months!