Dublin topographic maps

Average elevation: 23 m

Average elevation: 0 m

Average elevation: 24 m

Average elevation: 49 m

Average elevation: 28 m

Average elevation: 27 m

Average elevation: 37 m

Average elevation: 31 m

Average elevation: 40 m

Average elevation: 26 m

Average elevation: 46 m

Average elevation: 44 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".

Average elevation: 45 m

Average elevation: 37 m

Average elevation: 48 m

Average elevation: 17 m

Average elevation: 42 m

Average elevation: 27 m

Average elevation: 5 m

Average elevation: 44 m

Average elevation: 35 m

Average elevation: 53 m

Average elevation: 54 m

Average elevation: 33 m

Average elevation: 40 m

Average elevation: 2 m

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.

Average elevation: 16 m

Average elevation: 37 m

Average elevation: 49 m