The relics of the Passion presented at Notre-Dame de Paris include a piece of the Cross, which had been kept in Rome and delivered by Saint Helen, the mother of Emperor Constantine, a nail of the Passion and the Holy Crown of Thorns.
The hand of St. Francis Xavier is seen in a reliquary at the Jesuits' Church of the Gesu in Rome Sept. Relics of holy people have been venerated since early Christianity. I saw this, it's pretty scary.
Eucharistic Miracle of Ivorra, Spain - 1010: The priest of Ivorra, Bernat Oliver doubted the reality of the transubstantiation while celebrating mass, suddenly a miracle occurred, the wine in the chalice was converted into blood and poured onto the altar cloth which flowed onto the ground
Άγια λείψανα του Αγίου Γρηγορίου του Παλαμά και του Αγίου Διονυσίου του Αρεοπαγίτου (Ιερά Μονή Γρηγορίου, Άγιον Όρος) - Holy relics of St. Gregory Palamas and St. Dionysius the Areopagite (Holy Monastery of Gregoriou, Mount Athos)