Dunsink Observatory is an astronomical observatory located in Dunsink, a suburb of Dublin, Ireland. Established in 1785, it is one of the oldest observatories in the country and was originally built for the purpose of timekeeping and celestial observations. The observatory features a historic telescope, which was once one of the largest in the world. Today, Dunsink Observatory is operated by University College Dublin and serves as a center for public outreach and education in astronomy. It hosts various events, lectures, and workshops, allowing visitors to learn about the universe and the importance of astronomical research.