Belfast Castle Old Chapel, Northern Ireland. This old church is an amazing find on the way from Belfast Castle. This is literally in the middle of a city block, with houses built all around it. It's fenced off, with no visible road or inlet.
Notre-Dame Basilica - Basilique Notre-Dame: Montreal: The oldest catholic church in North America built in A magnificent cathedral with an intricately designed interior including stained glass chronicling the history of the City.