Birr Castle is a large castle in the town of Birr in County Offaly, Ireland. It is home of the seventh Earl of Rosse.
A main feature on the grounds of the castle is the "Great Telescope" or Leviathan (aka The Rosse Telescope) of the third Earl of Rosse, an astronomical telescope with a 183-cm (72 in) reflector.
It was completed in 1845, and capable of capturing more light and seeing further into space than any telescope had done before.
Birr therefore became a focus for astronomical observations, and visitors came the observatory from all over the world and was used for several decades before the last observations were made in the first years of the 20th century.
Its record size was not surpassed until the completion of the 254-cm (100-in) Hooker Telescope in 1917. It was dismantled in 1914, but was restored in the 1990s and is open to the public.
The walled gardens in the grounds feature Box Hedges that are over 300 years old. They are also , according to The Guinness Book of Records, the tallest hedge in the world.
Music Starálfur by Sigur Rós
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