Castell Dinas Bran, is a medival castle that overlooks Llangollen in Wales. The english name of this castle is "the crow's castle" and it was built in the 13th century. In Anna Seward's poem "LLangollen Vale", the history of Wales is told. The castle is mentioned briefly in the poem as a sign of Welsh power and prominence in a time when England was trying to take over Wales. The Princes of Powys Fadog built to rule over the small area of Llangollen, Wales.