Anglesea was the last part of England in which the Druids practised their rites.  Many of the Druidical remains still exist, the most remarkable of which are called cromlechs--flat stones resting upon others, probably serving as altars.  Anglesea was governed by its native princes until the reign of Edward the First, when it became subject to England.  We made our way to the ivy-covered castle, which stands a short distance from the town.  It is nearly square, has a round tower at each angle, and another at each side, and is surrounded by low massive walls.  The inner court is about one hundred and ninety feet square.  To the north-west of it stands the banqueting hall, seventy feet long.  On the east side is a chapel, in the Early English style of architecture. The castle was built by Edward the First, soon after those of Conway and Caernarvon.  It was surrounded by a deep fosse, which could be filled by water from the sea.  It held out like that of Caernarvon, but was captured by the Parliamentary forces under General Mytton.