It has largely been forgotten but people have visited Wales' only thermal spring for thousands of years
Don't spend the night tossing and turning just because you're too hot
Hafod y Garreg was built in an ancient hunting forest during the Owain Glyndwr revolt
If they did, no one who lives here could ever get car insurance
To this day, no one can say precisely why they exist - but you'll find these ancient creations all over Wales