The National Churches Trust has partnered with Visit Wales, the Church in Wales, and others to form the pilgrimage called 'Exploring Sacred Wales'.
The aim is to make it easier for tourists to discover Wales' 'must-see' historic churches and chapels while on holidays.
By May 2020, the places of worship will be featured on ExploreChurches.org which will showcase the history, art, and architecture of the buildings.
It will also provide openings times and details of special events.
BBC news reader Huw Edwards, vice-president of the National Churches Trust said: "From hill top chapels to ancient churches to medieval cathedrals, the churches and chapels of Wales are some of the most beautiful religious buildings anywhere in the world.
"I'm delighted that 'Exploring Sacred Wales' is making it exciting and easy to discover the sacred spaces of Wales.
"It's high time that the churches and chapels of Wales took their rightful place on the tourism map alongside our magnificent castles, stunning mountains and exhilarating coastline."
'Exploring Sacred Wales' has received funding through the Welsh Government Rural Communities Rural Development Programme.
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