Dunsink Observatory - Credit: Wikimedia Commons
The Dunsink Observatory is an astronomical observatory established in 1785 in the townland of Dunsink in the outskirts of the city of Dublin, Ireland.Alexander Thom, Irish Almanac and Official Directory 7th ed., 1850 p. 258. Retrieved: 2011-02-22. Read more on Wikipedia
Source: en.wikipedia.org