County Dublin topographic maps

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As the word Castle did not come into use in Ireland until Norman times we know that Castleknock is a name of comparatively recent origin. Documents from the 12th and 13th centuries refer to the place as Castrum Cnoc, simply Cnoc and also Chastel-cnoc or Castel-Cnoc. So it seems that the name Castleknock is…

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The medieval town developed in a linear pattern along Main Street, in a roughly north-south direction. Swords has one of the best examples of this settlement pattern in the Dublin region. The round tower, 26m in height, is also an indicator of early Christian settlement. The Irish high king Brian Boru is said…

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The Poddle was diverted into the city through archways where the walls adjoined the castle, artificially flooding the moat of the fortress's city elevations. One of these archways and part of the wall survive buried underneath the 18th-century buildings, and are open for public viewing.

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Lambay Island is the largest island off the east coast of Ireland. It covers about 2.5 km2 (0.97 sq mi). The highest point – a hill known as Knockbane – rises to 126 m (413 ft). The island's high ground lies to the east and aside from Knockbane includes Heath Hill and Tinian Hill, and in the extreme…

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A description of Baldoyle from Lewis's Topographical Dictionary of Ireland (Dublin, 1837) gives a useful summary of what was then a substantial rural fishing village.

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