Olive baboons (Papio anubis) use fixed, secure and naturally-occurring sleeping sites such as tall trees and rocky cliffs, as protection from predators. Although these sleeping sites are safe, they can be limited in availability. We documented olive baboons’ use of 45m tall high-tension electrical pylons (towers) as sleeping sites in Laikipia, Kenya. These observations suggest that olive baboons may use anthropic infrastructure for sleeping sites in areas where naturally occurring cliffs and tall trees are limited.