Alain Robert, 56, climbed the 230-meter (754-ft) Heron Tower in the City in London with no safety gear, using only wafer-thin gloves and chalk on October 25.
The French Spiderman was detained just after scrambled back down to Earth for causing a public nuisance.
"I'm not crazy. What I'm doing may seem crazy but I'm not that crazy," Robert told Sky News.
In 2007 he climbed another London building, it was the 101-meter (331 ft) Portland House.