Edir Macedo of the Universal Church in Rio says he wants it to become as big an attraction at the Christ the Redeemer statue.
It cost £178million and took 4 years to build the replica which features a helipad on the roof.
The eleven story building seats 10,000 people and was made using white stone imported from Israel for authenticity.
It's to accommodate Brazil's rapidly increasing evangelical believers.
In 1970 92% of people in Brazil classified themselves as Roman Catholic but that figure has now fallen to 60% with many moving to other Christian denominations.
42 million Evangelical Christians are now living in Brazil.