Ballintoy Harbour, Antrim

The Trinity College Dublin, Discipline of Geology houses teaching and research collections the first of which were acquired in 1777. Currently the collections comprise over 100,000 specimens. The main palaeontological holdings include Irish Silurian and Carboniferous invertebrates, Mesozoic ostracods, and Upper Palaeozoic miospores. The rock and mineral collections largely date from the 1820s and contains both Irish and foreign specimens.

A number of displays on topical aspects of Geology can be seen in the entrance hall of the Museum Building as part of the Trinity Trails Walking Tours. The hallway also contains skeletons of the iconic Pleistocene mammal, the giant Irish Deer, and various Irish and foreign decorative stones make up the pillars and the staircase.

The current Geological Museum was relocated from the main campus to Trinity East, formerly known as Trinity Technology and Enterprise Centre (TTEC), in 2014. The museum is open by appointment only, for enquiries please visit our contact page.


We have started to put collections online, visit our collections pages to explore.

For online activities and educational material relating to geology, visit our sister site geoschol.com.

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Interior of the Geological Museum