Such will be the majesty of the Faith in the future.

Nevertheless, the Shrine of Bahá’u’lláh is the Most Holy, the Most Sacred Shrine on the planet. And, as I stated before, the Shrine of the Báb and the World Administrative Centre are under the shadow of the Shrine of Bahá’u’lláh. Blessed are those who are able to visit that Shrine. In this day we are permitted to enter the Shrine – what a blessing this is! Do you think, when millions and billions will become Bahá’ís, that it will be possible to enter that Shrine or the Shrine of the Báb? They will have to satisfy themselves with circumambulation, while visiting the Shrines from outside. Such will be the majesty of the Faith in the future.

(Shoghi Effendi: The Range and Power of His Pen, Ali Nakhjavani)