French climber Alain Robert is known for illegally climbing some of the world's tallest buildings, often without any protection.
Luckily that wasn't the case when he scaled Istanbul's Sapphire building… because he slipped and fell while around 260 metres in the air.
Robert had made it most of the way up Turkey's highest building when he reached a section where there was grease and oil inside the grove where he put his foot.
This meant he slipped fell about 10ft, but he was soon caught by his safety harness and continued the remaining small climb to the top… in a slightly less cocky mood than usual.