Dunsink Observatory
				
				
					Castleknock
				
				
				
				
				
				
				
				
				
				About
				
					Originally part of Trinity College, the Dunsink Observatory houses the astronomical section of the School of Cosmic Physics, which is now a part of the Dublin Institute for Advanced Studies. The observatory regularly hosts public stargazing nights where admission is free, although tickets are required. Open nights are held on the first and third Wednesday nights of the dark winter months. Prospective visitors must write for tickets enclosing a stamped self-addressed envelope. Admission is free.