You are most likely asking about the "mother temple" of North America, since wherever Baha'is meet to commune can be considered a house of worship, be it an Indian hogun, a meeting center, rain forest hut, etc. The North American House of Worship (temple) is located on Lakeshore Drive in Wilmette, Illinois, near the Canadian border. Its photo is linked below.
A Bahai place of worship is called: 1) a Bahai house of worship, 2) a Bahai temple or 3) a Mashriqu'l-adhkar These are three different names for the same thing.
The Bahai community is very widely spread across the world, but in small numbers. Most local Bahai communities meet in private homes, or in a rented hall or a Bahai centre, and the same places are used for worship meetings and other meetings. However specially dedicated Houses of Worship / Temples / Mashriq'ul-Adhkars (3 names for the same thing) have been built in some places. There are continental Houses of Worship (for example, the North American one in Wilmette, Illinois) and two national ones are about to be built (Congo and Papua New Guinea). Local communities, especially in the third world, may have a small house of worship or Bahai centre built with local resources, and plans for a number of smaller Houses of Worship have recently been announced in Cambodia, India, Kenya, Colombia and Vanuatu. These will be built with help from the Bahais around the world, and will be in permanent materials.
Several Bahá'í houses of worship were built; so far, basically one for every continent (as of 2013, the one in South America isn't finished yet). You can find a summary in the Wikipedia article entitled "Bahá'í House of Worship".
Most usually in their own homes, because we pray daily. There are devotional meetings where Bahais and anyone else who wants to join us pray, read scriptures, meditate and (with a bit of luck) sing together. These are usually in people's homes but there is sometimes a local Bahai centre. There are also a few specially dedicated Houses of Worship. There's an article on them in wikipedia:http://en.wikipedia.org/wiki/Bah%C3%A1%27%C3%AD_House_of_Worship
There are Bahá'ís all over the world, in every country.
Yes, there are homes that belong to Baha'is in Wilmette, IL, as well as a Baha'i Home for the Aged. The Baha'i House of Worship in Wilmette is located at Linden and Sheridan. See http://www.bahai.us/bahai-temple
It depends what you mean by "church."The "church" in the sense of a building for worship is called the Mashriqu'l-Adhkar, which is literally the place where remembance of God goes up: a plain English equivalent would be chantry. Bahais in the west call them houses of worship. There's a wiki article here:http://en.wikipedia.org/wiki/Bah%C3%A1%27%C3%AD_House_of_WorshipThe "church" in the sense of the community of believers is just called the Bahai Community or Bahai Commonwealth."The Church" in the sense of a the authorities within the community that say what's right and what's not, and what's going to happen, is called the Bahai Administrative Order. There are no priests, the authority is in the hands of elected bodies, from the local to the international level, and there are people appointed for special functions but without any general authority in the community.
A Bahá'í believer can worship, or pray, anywhere - at home for example. However, there are usually designated places in each town or city, where Bahá'ís meet to pray, to consult, etc.
Houses of worship are designated based on what religion they belong to, not which country they sit in. Most houses of worship in Iran are for Muslims, and, therefore, are mosques, but there are also Christian churches, Jewish synagogues, Zoroastrian fire temples, and Baha'i temples.
minaret
minaret
They meditate in front of Buddha or at their houses.