Abbey (Abbey of Heretics)
From Tardis Wiki, the free Doctor Who reference
River Song once visited an abbey in 12th century England. It's nuns included Sister Patrick, Sister Magdalene, and Sister Ursula, the latter of which was not from Earth.
Its library contained Agrippina's Misfortunes, Memoirs of Sulla, Emperor Claudius' Guide to Gambling, and the Book of Stars. (AUDIO: Abbey of Heretics)