A legacy Of 400 Years
The Parsons family
The Great Telescope
In the early 1840’s, the Third Earl of Rosse designed and built the largest telescope in the world. With this telescope, he discovered the spiral nature of some of the galaxies, and from 1845-1914, anyone wishing to witness this phenomenon had to come to Birr. And they came, in their hundreds, from across Europe and beyond, to observe the stars with Lord Rosse or simply to marvel at this feat of engineering in the middle of Ireland.
Ireland Historic Science Centre
Rosse Observatory
Welcome to the Rosse Observatory, operated by Trinity College Dublin and the Dublin Institute for Advanced Studies. The observatory is dedicated to studying radio emission from astronomical objects such as the Sun, pulsars other variable sources.
Women In Science
The castle of Birr
Read More The castle survived two sieges in the 17th century, leaving the family impoverished at the beginning of the 18th century. This led to little was done to the 17th century house. However, sometime between the end of that century and the beginning of the 19th century, the house which had always faced the town, was given a new gothic facade, which now faces the park. The ancient towers and walls, now the park side of the castle, were swept away, including the Black Tower (The Tower House) of the O’Carroll’s, which had stood on the motte. Around 1820 the octagonal Gothic Saloon overlooking the river was cleverly added into the space between the central block and the west flanking tower. After a fire in the central block in 1836 the centre of the castle was rebuilt, with the ceilings heightened, a third story added and also the great dining room. In the middle of the 1840s a larger work force was employed during the famine times in Ireland. The old moat and the original Norman motte were flattened, and a new star-shaped moat was designed, with a keep gate. This was financed by Mary, Countess of Rosse. This period of remodelling was also overlapped with the construction of the Great Telescope, The Leviathan. Which was completed in 1845. The final work on the castle was completed in the 1860s when a Square Tower at the back of the castle on the East side was added. This now contains nurseries on the top floor which have a great view over the town of Birr.
Archives - The Rosse Papers
The Rosse papers are one of the most important collections of manuscripts in private ownership in Ireland. Extending from the early seventeenth century, when members of the family first established roots in the country, to the present. The core of the family archives is provided by papers of the successive members of the Parsons family. This calendar is an essential piece of reading for anyone interested in the history of: Seventeenth and Eighteenth-century Ireland as well as Science in the Nineteenth century.The evolving story of the surviving families of the Irish landed elite in the Nineteenth and Twentieth centuries, and in the influence of a particular family that contrived over a number of centuries not only to transform Birr into one of the country’s most elegant small towns, but also to construct and sustain one of the finest country houses and its gardens.
Read More Access to the archives are by appointment only, please email archives@birrtrust.ie to book your appointment, this e-mail is not monitored daily. Please give good notice in advance of preferred date and await confirmation. The Calendar of the Archives, produced by the Irish Manuscript Commission is available for €75, to order please email archives@birrtrust.ie The Calendar of the Rosse Papers edited by A.P.W. Malcomson, Irish Manuscripts Commission, Dublin 2008 Rosse Papers