County Dublin topographic maps

Average elevation: 66 m

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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…

Average elevation: 55 m

By the mid-19th century, the castle was owned by the then Marquess of Lansdowne, with Samuel Lewis's Topographical Dictionary of Ireland (printed 1837) stating that it was an "irregular pile", the "property of the Marquess of Lansdowne [..] occupied by Mr. E. Cavanagh".

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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…

Average elevation: 28 m

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At the northern end of the street stands Swords Castle, 200m northeast of the ecclesiastical site, which was built in the early 13th century. A short distance north of the castle is the elevation known as Spittal Hill, where a hospital once stood.

Average elevation: 24 m

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Average elevation: 49 m

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…

Average elevation: 14 m

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