Calendar scheduling systems are described. In one embodiment, a client system receives an input, within a calendar application program, to schedule an event, the input specifying at least one of the event, a representation of a location for the event, or metadata of a physical facility at the location, and the client system transmits the input to a calendar server to determine an availability of at least one physical facility at the location and receives and presents data specifying the availability of at least one physical facility at the location. The client system may further cause an invitation to be sent to attendees of the event. Other systems and other methods are also described.