Simplify the following text for a Grade 6 native English-speaking person.
Original: Yamoussoukro is also the site of what is claimed to be the largest Christian place of worship on Earth : The Basilica of Our Lady of Peace of Yamoussoukro , consecrated by Pope John Paul II on September 10 , 1990 .
Simplified: In 1990 , the Pope opened the biggest church in the world . It is called Basilica of Our Lady of Peace of Yamoussoukro .