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An enchanting Irish castle, twice voted one of the 'Top 10 Attractions in Ireland ' in 2022 and 2023, is being celebrated as a must-visit destination. It's not just for its panoramic vistas and awe-inspiring architecture, but also for the scientific marvel it shelters.

Sprawling over an impressive 120 acres, the castle grounds are a nature lover's paradise, featuring beautiful gardens, scenic parklands, hidden waterfalls, and picturesque riverside walks, all teeming with over 5,000 species of flora and fauna.

Nestled in County Offaly in Ireland's midlands, the castle also houses a Historic Science Centre, where visitors can delve into the details of the site's scientifically significant discoveries.

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Birr Castle Demesne, situated in thecharming yet often overlooked heritage townof Birr, is truly a sight to behold. The Parsons family, who have called the castle home since 1620, still live there, with the 7th Earl of Rosse and his family overseeing the estate's preservation and upkeep.

A living tribute to Ireland's scientific and cultural legacy, Birr Castle Demesne, its fascinating Science Centre, and the stunning surrounding gardens are well worth exploring if you find yourself in the vicinity of the underappreciated Faithful County, reports the Irish Mirror.

Whether you're drawn to delve into the castle's fascinating and complex heritage, gaze at celestial wonders through not one but two telescopes situated within the grounds, or meander through the tranquil gardens that flourish throughout the year – this outstanding Irish attraction caters to all tastes.

From the renowned Great Telescope and a Lunar Heat Machine to the Historic Science Centre, a playground suitable for all ages, verdant gardens, spectacular walking trails and the impressive castle itself – there's an abundance of activities to enjoy at this estate.

One Tripadvisor reviewer of Birr Castle said: "Take the time to truly explore this expansive and amazing place. The remains of the old telescope, the Sequoia grove, the extensive gardens and grounds as well as the out-of-the-way paths that can lead you to perfect picture spots are all worth your time. The castle itself is an occupied family dwelling providing great counterpoint to the grounds on which it sits."

Another visitor added: "What was a spontaneous excursion idea turned out to be a really absolutely worth seeing facility in surprising size. The terrain is really extensive, with lake, waterfalls, countless paths, gardens and the really impressive telescope."

The splendid castle

Birr Castle originated as a Norman fortification dating back to 1170. Since its construction, it has experienced significant transformations, largely carried out by the O'Carroll family of Ely, who initially erected the castle as part of a network of strongholds.

Subsequently, when the Parsons family assumed ownership in the 1620s, they ushered in their own wave of significant changes.

The imposing castle itself isn't typically accessible to the public, as the Earl and his family continue to live there. However, seasonal guided tours of the castle – conducted by descendants of the Earl and his wife – are offered annually from mid-May through August for those wishing to visit.

These tours allow guests to venture inside the castle and discover the magnificent interiors of its five principal reception rooms.

The vistas from the castle are truly spectacular, particularly from its octagonal Gothic Saloon, where the River Camcor can be admired in all its majestic splendour. The river holds significance in Birr's heritage, as the aristocratic couple's son once utilised its flow to supply the town with electricity.

The Great Telescope – a historic scientific marvel

In the early 1840s, the Third Earl of Rosse created and built the globe's largest telescope, dubbed The Great Telescope or The Leviathan of Parsonstown, which he subsequently chose to house within the castle's grounds.

Using his extraordinary instrument, he uncovered the spiral structure of galaxies, and from 1845 until 1914, it retained the distinction of being the world's largest telescope. During this era, Birr transformed into a magnet for those keen to glimpse this celestial wonder.

Visitors flocked from across Europe and beyond, either to study the heavens alongside Lord Rosse or simply to marvel at the remarkable feat of engineering nestled in the Irish countryside.

Standing at an imposing 72 feet in length with a 6-foot diameter mirror, the Great Telescope transcended its role as merely a scientific instrument of its day – it embodied human innovation and served as a monument to mankind's limitless inquisitiveness and spirit of discovery, powered by the most advanced engineering techniques of the period.

After being rebuilt in the 1990s, the telescope now occupies pride of place within the castle grounds.

The Historic Science Centre at Birr Castle displays the wonders of early photography, engineering and astronomy, with special emphasis on the remarkable design and construction of the world-famous Great Telescope.

There's also an exhibition devoted to the groundbreaking photographic achievements of Mary Countess of Rosse. Her preserved darkroom at Birr Castle remains one of Europe's oldest surviving examples.

The magnificent gardens

Concealed waterfalls, a tranquil lake, more than 5,000 species of flora and fauna, prize-winning gardens, a children's play area and an overarching atmosphere of peaceful calm – that's what awaits in the verdant grounds surrounding Birr Castle. Kingfishers, otters and herons are amongst the garden's regular visitors.

Established by Anne Countess of Rosse in 1936, Birr Castle's magnificent formal gardens boast the world's tallest box hedges. The Moat Walk offers walkers spectacular views, whilst the River Camcor meanders past in all its splendour.

What visitors need to know

The gardens, castle grounds and Historic Science Centre welcome guests daily from 9am until 6pm, with final admission at 5pm.

It's worth noting there isn't an on-site car park available, though motorists can leave their vehicles in the nearby town of Birr.

The charming Courtyard Café operates from 10am to 5pm each day and offers wheelchair access, as do the castle grounds and Science Centre. The castle building itself, however, has limited accessibility owing to numerous staircases throughout.