The top five tourist attractions in Wales are buildings linked to our heritage and culture. Tourism brings in over £3bn to the economy and is a key priority for the Welsh Government.
So why are 3,000 heritage buildings on the verge of falling down? Wales this Week investigates the matter in a programme that'll be broadcast on ITV1 Wales tonight.
Architectural historian Mark Baker is calling for local authorities to do more to preserve buildings under their control, blaming a "lack of understanding" on the part of councils to properly maintain important sites.
"They have a fear they'll end up with the bill" he says.
More top news
Welsh children are falling behind in the happiness stakes because they spend too much time indoors.
Aaron Ramsey says Wales can exploit England's weaknesses when the two countries meet at Euro 2016.
David Cameron could call for extension of EU tariffs.