The church is noted for having the relics of Saint Valentine, which were donated to the church in the 19th century by Pope Gregory XVI from their previous location in the cemetery of St. Hippolytus in Rome.

[citation needed] The church also contains relics of St. Albert, a Sicilian who died in 1306.

On his feast day (7 August), a relic of the saint is dipped into the water of St. Albert's Well, and the Carmelites say that those who piously use the water receive healing of both body and mind through the intercession of St.

[2] The church also contains a life-size oak figure of Our Lady of Dublin.

[3] The 1825 building features in Fisher's Drawing Room Scrap Book, 1833 as The Church of the Carmelite Friary., an engraving of a painting by George Petrie of the interior being accompanied by a poetical illustration by Letitia Elizabeth Landon.