World Largest Church

The Basilica of Our Lady of Peace of Yamoussoukro is a Roman Catholic minor basilica dedicated to Our Lady of Peace in Yamoussoukro, the administrative capital of Côte d'Ivoire (Ivory Coast). The basilica was constructed between 1985 and 1989 at a cost of $300 million.
The design of the dome and encircled plaza are clearly inspired by those of the Basilica of Saint Peter in the Vatican City, although it is not an outright replica. The cornerstone was laid on August 10, 1985, and it was consecrated on September 10, 1990, by Pope John Paul II.
Contrary to popular belief, this particular basilica is not a cathedral. The nearby Cathedral of Saint Augustine is the principal place of worship and seat of the bishop of the Diocese of Yamoussoukro.
Guinness World Records lists it as the largest church in the world, having surpassed the previous record holder, St. Peter's Basilica, upon completion. It has an area of 30,000sq metres (322,917 sq ft) and is 158m (518ft) high. However, it also includes a rectory and a villa (counted in the overall area), which are not strictly part of the church, and it can accommodate 18,000 worshippers, compared to 60,000 for St. Peter's.

The Basilica is administrated by Polish Pallottines.