Birr Castle

Birr Castle: Giant Telescope Optics & Ireland's Oldest Gardens

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Skip the main castle rooms if you're on a budget; the real draw is the massive 19th-century Leviathan telescope in the courtyard. It’s an engineering flex that literally changed how we map the stars. Spend two hours wandering the walled gardens, specifically the box hedges. Go in late spring when the magnolias actually pop. If it’s raining, hit the Science Centre—it's surprisingly solid and not just a boring museum display.

Address: Rosse Row, Birr, Offaly, R42 VO27

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