Yes. There can be a common temple where everybody congregates and worships. That has its own benefit. It is only when multitudes of celestials prayed together that Vishnu incarnated as Rama to protect the world. It is only when in unison devotion is expressed, that the vibration is experienced by us within ourselves.
However, at times, we should be able to listen to ourselves. We have to react to our own vibrations. We want to be in silence. In order to practice travelling inwards, in order to protect our minds from getting fragmented, we need to have a prayer room at home, where we go there to sit and pray.
(Q&A, USA, 29 Jul 2011)