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Birr
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Telescope at Birr Castle
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Telescope at Birr Castle The 72-inch reflecting telescope at Birr Castle, County Offaly, Leinster, Ireland, was the largest in the world at the time of its construction in the 1840s.

Birr

Ireland
Also known as: Biorra
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Irish:
Biorra
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Birr, urban district and market town, County Offaly, Ireland, on the River Camcor. A monastery was founded there by St. Brendan of Birr (died c. 573). In 1620 Birr Castle, the principal stronghold of the O’Carrolls, and the surrounding area were granted to Lawrence Parsons of Leicestershire, England, whose descendants became the earls of Rosse. Present-day industrial activities include the production of footwear and plastic coverings. Pop. (2006) 4,091; (2011) 4,428.

This article was most recently revised and updated by Michael Ray.
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