Complex sentence: The largest is Gardendale First Baptist Church, among the 10 largest churches (by membership) in Alabama, located on two separate campuses including its new sanctuary near Interstate 65 between Mount Olive Road and Fieldstown Road.
Split into simpler sentences: The largest is Gardendale First Baptist Church which is among the 10 largest churches (by membership) in Alabama. It is located on two separate campuses including its new sanctuary near Interstate 65 between Mount Olive Road and Fieldstown Road.