I was able to visit the National shrine of Saint Elizabeth Ann Seton many years ago when I attended the National Fire Academy which is literally right next door. In fact, the buildings of the NFA are the former school that was started by St. Elizabeth Ann Seton. There is still a beautiful little chapel on campus that, sadly, is now being used as a store room.
During the Battle at nearby Gettysburg, the school was used as a hospital for the wounded. I was able to join the sisters at the shrine for lauds one morning. They were all as sweet as could be.