Afraid of heights? You may not want to watch this video.

Two daredevil European photographers have quite literally risked life and death to climb the world’s second tallest building, without using any harnesses or safety equipment.

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Vitaliy Raskalov, 21, and Vadim Makhorov, 25, have a cult following online after climbing some of the world’s tallest buildings and posting the photos on their website, On The Roofs.

“For us, photography and urban exploration have been inseparable since the very beginning of our career,” the duo wrote on their blog.

Raskalov and Makhorov rose to fame after climbing the Shanghai Tower a year ago, and have since scaled the Pyramids of Giza and Cologne Cathedral.

The video, which has only been posted to YouTube for three days, has already been watched one million times.