KUALA LUMPUR, Aug. 28 -- Not for the faint-hearted, Kuala Lumpur Tower has unveiled a new attraction that lets visitors walk 300 metres above the city in a transparent glass cube.

Called Glass Box (Merdeka), the installation extends dramatically from the tower's Sky Terrace, giving thrill-seekers a chance to step into the open sky with the capital's skyline - and Menara 118, the world's second tallest building - as the backdrop.

In a media release, KL Tower said the launch was held in conjunction with Merdeka month.

The rose-gold framed cube is built with three layers of tempered laminated glass and can hold up to six visitors at a time.

The effect is a dizzying but photogenic encounter, designed for panoramic selfies, reels and video...