Knowing where you can and can't fish isn't a trivial matter, and it seems our forebears thought so as well. Nestling in the heart of Carmarthenshire Archives' new building are documents cataloguing fishing rights on the River Towy dating back to the 13th Century.
They are the earliest collections of a treasure trove of maps, plans, ledgers, books, sketches, photos and glass plate negatives at the building at the rear of Carmarthen Library, St Peter's Street. To give you a sense of how many there are, if laid out from end to end the collection would stretch four miles.
The new £2.2 million building has been built to Passivhaus standards, meaning it has an airtight fabric and is extremely energy efficient. Hayden Burns, archives transformation manager, said maintaining a 17C temperature and 45% humidity was especially important for the two main storage rooms - known as strong rooms. You can get more Carmarthenshire news and other story updates straight to your inbox by subscribing to our newsletters here.