Buildering

Buildering (also known as edificeering, urban climbing, structuring, or stegophily) describes the act of climbing on the outside of buildings and other artificial structures. The word "buildering" is a portmanteau, combining the word building with the climbing term bouldering. If done without ropes or protection far off the ground, buildering may be dangerous. It is often practiced outside legal bounds, and is thus mostly undertaken at night-time.

Night climbing is a particular branch of buildering which has been practiced for many years in the universities of Oxford and Cambridge, England, and elsewhere. Night climbing, as distinct from buildering, is performed mainly by undergraduates under cover of darkness. The term "night climbing" has replaced the older term "roof climbing".

Adepts of buildering who are seen climbing on buildings without authorization are regularly met by police forces upon completing their exploit. Spectacular acts of buildering, such as free soloing skyscrapers, are usually accomplished by lone, experienced climbers, sometimes attracting large crowds of passers-by and media attention. These remain relatively rare.