Question: What is the largest Catholic Church in the United States? Where is it located? It is interesting to note that a special hall in the crypt level of this church contains statues of American saints.
Answer: Basilica of the National Shrine of the Immaculate Conception, Washington, DC.
You can take a virtual tour of this Basilica at the following website:
http://www.nationalshrine.com/site/c.osJRKVPBJnH/b.4719297/k.BF65/Home.htm