The surviving historic fabric and detail — whether above or below ground — helps us to understand when and how each historic asset was made, how it was used and how it has changed over time.
Mae’r adeiledd a’r manylion hanesyddol sy’n goroesi – uwchben neu o dan y ddaear – yn ein helpu i ddeall pryd a sut y gwnaed pob ased unigol, sut y’i defnyddiwyd a sut mae wedi newid gydag amser.