Returning BBC network and BBC Wales series.

Will Millard discovers Wales's hidden history by exploring forgotten, secret and almost inaccessible locations that show the country as it has never been seen before.

“Hidden Wales is a reminder of how good these travelogues can be when done well, 4 stars” Daily Mail

"What to Watch" The i

"The Choice" The Times

"Watch This" The Daily Mirror

"Best of the Week" The Guardian

"4 Stars, Last Night’s TV" The Guardian

"What to Watch" Daily Mail

"What's On TV Tonight" The Daily Telegraph