When Camillo and I visited Paris for 4 days back in '94, one of the sites that he made sure he showed me was the Basilica of the sacred heart in Montmartre or Basilique du Sacré Coeur de Montmartre. 
I remember being up at the top of the stairs, I can remember climbing them or at least a lot of them. I don't remember being inside the basilica. Yesterday we went back up - by taxi this time - and only climbed the last 50 or so. We stood in line to get inside. There was a massive crowd both inside and outside of the cathedral. Photos were not allowed inside. Talking wasn't allowed (no one paid any attention to this there was quite an undercurrent of noise.) I would have loved to show you the inside.... it has many mosaics of very intricate detail that only a photo could show you how beautiful they are. The no photo rule made no sense to me, even Notre Dame allows photos with no flash, but there was a bookstore that opened up directly into the nave that sold color photos cards (???) maybe there is a business reason for the rule. 
We paid to go up in the bell tower, was worth the 5 euro each, and the 300 step climb. You can at least get a good idea of the architecture up close..... enjoy.
(sorry for the order of the photos - the internet connection is so bad - every time I moved one around it became worse or the connection dropped and I lost everything.... patience is NOT my middle name)
