The beautiful world-famous Petronas Twin Towers in Kuala Lumpur, Malaysia were constructed in 1998. The name sounds as romantic as they look together, standing side by side. These elegantly slender towers once held the title of the world’s tallest buildings before being ousted from that position by Taipei 101.

Petronas Tower 1 is the 3rd tallest building in the world.

Petronas Tower 2 is the 4th tallest building in the world.

However, they still remain the tallest twin buildings in the world. They were designed by Argentine-American architect Cesar Pelli and were built on Kuala Lumpur’s race track. The structure is made of high-strength concrete and has a curtain wall of glass and stainless steel sun shades that help diffuse the intensity of light.

The major feature of the towers is the sky-bridge between the towers on the 41st and 42nd floors, which is the highest 2-story bridge in the world. Visitors are allowed on the Skyway. The sky-bridge is also meant to be used in case of a fire or for other emergencies.