A French climber has scaled one of Dubai's tallest skyscrapers, relying on just chalk and sticky tape on his fingertips.

Alain Robert climbed the 75-storey Cayan Tower in the emirate's glitzy Marina area on Sunday. And he completed the task in just 70 minutes, with no harness and little space for his feet on the ledges of the 307-meter-high tower.

Robert, 52, is known as 'The French Spiderman'. He is no stranger to scaling high buildings.

In 2011, he climbed the world's tallest tower. Using a rope and harness to comply with organizers' requirements, it took him just over six hours to scale Dubai's 828-meter Burj Khalifa .