The nine concentric circles surrounding the “the Báb's holy dust”

• The outermost circle in this vast system, the visible counterpart of the pivotal position conferred on the Herald of our Faith, is none other than the entire planet.
• Within the heart of this planet lies the "Most Holy Land," acclaimed by 'Abdu'l-Bahá as "the Nest of the Prophets" and which must be regarded as the center of the world and the Qiblih of the nations.
• Within this Most Holy Land rises the Mountain of God of immemorial sanctity, the Vineyard of the Lord, the Retreat of Elijah, Whose return the Bab Himself symbolizes.
• Reposing on the breast of this holy mountain are the extensive properties permanently dedicated to, and constituting the sacred precincts of, the Báb's holy Sepulcher.
• In the midst of these properties, recognized as the international endowments of the Faith, is situated the most holy court, an enclosure comprising gardens and terraces which at once embellish, and lend a peculiar charm to, these sacred precincts.
• Embosomed in these lovely and verdant surroundings stands in all its exquisite beauty the mausoleum of the Bab, the shell designed to preserve and adorn the original structure raised by 'Abdu'l-Bahá as the tomb of the Martyr-Herald of our Faith.
• Within this shell is enshrined that Pearl of Great Price, the holy of holies, those chambers which constitute the tomb itself, and which were constructed by 'Abdu'l-Bahá.
• Within the heart of this holy of holies is the tabernacle, the vault wherein reposes the most holy casket.
• Within this vault rests the alabaster sarcophagus in which is deposited that inestimable jewel, the Báb's holy dust. So precious is this dust that the very earth surrounding the edifice enshrining this dust has been extolled by the Center of Bahá'u'lláh's Covenant, in one of His Tablets in which He named the five doors belonging to the six chambers which He originally erected after five of the believers associated with the construction of the Shrine, as being endowed with such potency as to have inspired Him in bestowing these names, whilst the tomb itself housing this dust He acclaimed as the spot round which the Concourse on high circle in adoration. 

- Shoghi Effendi  (‘Citadel of Faith’)