Watch: French 'Spiderman' scales world's tallest twisted building without safety harness

A daredevil climber known as the 'French Spiderman' has scaled the world's tallest twisted skyscraper without a safety harness.

Alain Robert climbed Dubai's 1,007ft Cayan Tower with nothing more than sticky tape and chalk, which he kept in a pouch clipped to his waist, for help, the BBC reported.

Hundreds of spectators looked on as the 52-year-old scaled the 75-storey tower that has a twist of 90 degrees in less than 70 minutes. 

Robert has scaled the Eiffel Tower in Paris and Sydney Opera House. In 2011, he scaled the world's tallest tower, the Burj Khalifa in Dubai, which stands 828-metres (2,717-feet) tall.