Red, In addition to the information you posted from Wikipedia here is some more information on the basilica:
“The Basilica of the Sacré-Cœur of Montmartre is the Shrine of Perpetual Adoration and divine Mercy, dedicated to Jesus’ Sacred Heart. It is a unique place where people pray day and night, continuously, for almost 140 years now.”
VR/pat
ThanQ for that information on Sacré-Cœur.
We were told the gates of hell would not prevail against it.