Rooftopping, sometimes called roofing, refers to the unsecured ascent of rooftops, skyscrapers, towers, cranes, antennas, smokestacks, or other tall structures. Rooftoppers usually take photos or videos of their climbs.
The practice of scaling skyscrapers often results in security crackdowns and arrests. Many people have died or been injured when falling while rooftopping. From Wikipedia
