Alain Robert is a French rock climber and urban climber. Known as "the French Spider-Man" or "the Human Spider", Robert is famous for his free solo climbing, scaling skyscrapers using no climbing equipment except for a small bag of chalk and a pair of climbing shoes.

Buildering describes the act of climbing on the outside of buildings and other artificial structures. The word "buildering", sometimes misspelled bildering, combines the word building with the climbing term bouldering. If done without ropes or protection far off the ground, buildering is extremely dangerous. It is often practiced outside legal bounds, and is thus practiced mostly at night.