The Douay-Rheims Bible is the oldest English translation available and is frequently compared with the King James version because of its use of "Thee", "Thou" and other older forms of words. This translation is considered highly accurate but can be more difficult to read for some people.
For a long time there weren't many options available but renewed interest has led to new editions in many sizes as well as Confirmation and First Communion Douay Rheims Gift Bibles.
Be sure to read our article about the history of the Douay Rheims Bible. An interesting bit of trivia that will drive "King James Bible only" Protestants nuts: the King James editors used the Douay Rheims Bible as a reference when they were creating their translation!