There are, according to Baha'i scripture, no places that are intrinsically holy, but any place can be made holy by reciting the word of God there. Some places are, however, made particularly holy by their association with a Manifestation of God . Even then, if the people who worship at a sacred place do not truly turn toward God or they do not recognize a new Manifestation of God when he comes, then they are, in reality, worshipping an idol.
Baha'i Houses of Worship (called Mashriqu'l-Adhkars) are built to a common pattern : a generally circular shape, with nine sides, nine gardens, and nine paths. However, within this pattern, there is a great deal of possibility for local cultural variation. The Baha'i House of Worship in Samoa, for example, reflects the traditional indigenous huts called fales, while the Baha'i House of Worship in Panama has some elements of the patterns of the indigenous peoples of the area on the supporting walls. Baha'i Houses of Worship are open to all. They are solely dedicated to the worship of God. Only passages from scripture are read, chanted, or sung a cappella in them. They have no pulpits; no sermons are preached in them, and there are no set ceremonies or rituals associated with them. They are open to people of all religions and the scriptures of other religions can be recited in them.
Rather than place a great deal of their resources into buildings, Baha'is have preferred to put their resources and efforts into spreading their religion and into service to society. While it is envisioned that in the future there will be a House of Worship at the heart of each Baha'i community, there are currently only a representative number of these. As of 2010, only seven Houses of Worship have been built (with an eighth one in the process of construction), scattered over nearly every continent of the world. As a symbol of the concept that the social and the spiritual should not be separated, each House of Worship is intended to become the center of a set of buildings that serve the social needs of the community: schools, a university, medical facilities, an orphanage, a traveler's hospice, and homes and facilities for the aged, infirm, and disabled.
In addition, Baha'is have taken major steps to beautify those holy places that they control. Of the two sites designated by Baha'u'llah as sites of pilgrimage, the House of the Bab in Shiraz and the House of Baha'u'llah in Baghdad, the first was destroyed by the Iranian Islamic government in 1979 and the second was seized by the Iraqi government and the Islamic authorities in Baghdad in 1922. Baha'is now focus their pilgrimages on a third center of pilgrimage that was designated by 'Abdu'l-Baha—the shrines in the Haifa-'Akka area where the Baha'i Faith is headquartered. The shrine of Baha'u'llah at Bahji, north of the city of 'Akka, is regarded by Baha'is as the holiest place on earth. The shrine on Mount Carmel in the city of Haifa that contains the remains of both the Bab and 'Abdu'l-Baha is also regarded as especially holy. Thus the Haifa-'Akka area is now the major site of Baha'i pilgrimage in the world. The Baha'i shrines and gardens in this area were designated a "World Heritage Site" by UNESCO in July 2007—the first modern religious edifice to be so designated.