The map shows sacral objects, as well as units of territorial organization, of all religions, faiths and denominations in the Crown in the 2nd half of the 18th century that formed organizational structures and were in any way reflected in the sources. These include churches of three catholic rites (Latin, Greek, and Armenian), Eastern orthodox churches, Lutheran churches (Evangelical Church of the Augsburg Confession), Mennonite churches, Calvinist (Evangelical Reformed Church) churches, and churches of the Bohemian Brethren (the Brethren, despite strong tendencies towards unification with the Calvinists, were treated as a separate denomination). The most numerous non-Christian religious objects were Jewish temples. There were few Muslim mosques and karaite kenesas in the Crown.
The map is based mostly on sources and studies that provide regular data about structures and location of sacral buildings of various faiths and religions. In total, it contains 15 253 sacral objects, including 8311 Eastern Catholic (Uniate) churches, 5720 Latin churches, 841 synagogues and houses of prayer, 276 Lutheran temples, 36 Eastern Orthodox churches, 22 Catholic churches of Armenian rite, 19 Mennonite temples, 14 Calvinist churches, 10 churches of the Bohemian Brethren, 3 karaite kenesas and 2 mosques.
Visitors to the site may also download B. Szady’s book Geografia struktur religijnych i wyznaniowych w Koronie w II połowie XVIII w., Lublin 2010.