However, just before World War Two began, more than 500 precious paintings from London’s National Gallery were moved here under armed guard, to protect them from anticipated aerial bombing.
Fodd bynnag, ychydig cyn i'r Ail Ryfel Byd ddechrau, symudwyd dros 500 o baentiadau gwerthfawr o Oriel Genedlaethol Llundain yma wedi’u hamddiffyn gan wy arfog, i'w diogelu rhag bomiau o'r awyr.