The Apparition of Lourdes France is one of my favorites too.
As a kid at the age of 10 or 11 I watched the old 1943 movie Song of Burnadette; the story of Saint Bernadette Soubirous the visionary. I cried watching parts of the movie.
The Book Song of Burnadette which inspired the movie is even far more better. Must be a soft spot inside me. I cried reading that book when I was in my early teens.
Of course Fatima is another very memorable favorite.
Also Our Lady of Akita Japan