Questions: What church is the largest church in the world, covering more than five acres and capable of holding 60,000 people, it is 730 feet long and 500 feet wide? Where is it located?
Bonus Question: In this church what do the markings on the floor indicate?
Answer: St. Peter's Basilica, Vatican City.
Bonus Answer: There are markers along the floor of the nave indicating the length of some of the largest churches in the world.
Read more:
http://www.vaticanstate.va/content/vaticanstate/en/monumenti/basilica-di-s-pietro/interno.paginate.1.html