A system for holding at least one object to be held in a shaft-type building structure, comprising: a holding device, which in turn comprises at least a first holding device element having a holding portion for holding the holding device on a shaft-type building structure and at least a second holding device element having a second holding portion for holding the holding device on a shaft-type building structure. The at least second holding device element is movably mounted between a first operating position, in which the holding device can be or is held on a shaft-type building structure by means of the second holding device element, and a second operating position, in which the holding device cannot be or is not held on a shaft-type building structure by means of the second holding device element.