French urban climber Alain Robert has been arrested after scaling one of London�s tallest buildings.

Robert climbed the 662-foot (202-meter) Heron Tower without ropes or safety gear on Thursday as police cordoned off the building, closed roads and ushered spectators away.

Robert, known as �the French Spiderman,� has climbed many of the world�s tallest structures, almost always without ropes or harnesses and often without permission.

Before Thursday�s climb, he told reporters �I fully feel alive when my life is at stake. It may sound a bit scary and crazy, but this is the way it is.�

City of London Police said a 56-year-old man was arrested for �causing public nuisance.�

Commander Karen Baxter criticized Robert for taxing police resources and causing �significant disturbance to local transport and businesses and their staff.�

(AP)