Ireland is full of observatories and astronomical sites!

Birr Castle, Co. Offally: You can see the new I-LOFAR and the Great Telescope – in the 1840’s the Earl of Rosse designed and built the largest telescope in the world. This reflecting telescope remained the largest in the world for over 70 years.

List of all observatories in Ireland:

http://www.astronomytrail.ie/