A vehicle roof having a roof structure with a roof opening, which, by a roof opening mechanism, can be closed or at least partially uncovered as desired, said roof opening mechanism being designed as an interchangeable insert. Additionally, a roof opening mechanism is proposed, being designed as an interchangeable insert, for unlockable fixation at a roof structure of a vehicle roof, and comprising a frame, which can be placed upon an edge region of the roof structure, said edge region limiting a roof opening.