The Archbishop of Dublin has said Pope Francis' visit to Dublin for the World Meeting of Families next year will cost approximately €20m.

Diarmuid Martin said church collections might bring in about €5m, with the rest of the money to be made up from fundraising.

He said the visit was a huge undertaking and he wanted families to be able to come to the event without incurring huge costs.

The archbishop said that he was not thinking about the number of people who might attend, but about the quality of the events.

Speaking on RTÉ’s Today with Sean O'Rourke, he said that the pope's age means the amount of things he can do are "quite limited".

The pontiff recently turned 81.

The archbishop said that Pope Francis would like to visit a prison during his time in Ireland.

He added that he would like him to visit somewhere like the Capuchin Day Centre and meet some Traveller groups.

Archbishop Martin said there was a possibility that Pope Francis would travel outside Dublin, but that his visit is primarily for the World Meeting of Families.