Best castles in Offaly are situated in a central Irish county, featuring a landscape of bogs, the Slieve Bloom Mountains, and the River Shannon. This region offers a blend of natural beauty and historical significance, with many ancient sites and structures. Its rich heritage is reflected in its numerous castles, which stand as testaments to centuries of Irish history. The area provides opportunities for exploring both historical landmarks and the surrounding natural environment.
Last updated: April 29, 2026
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Birr Castle is a large privately owned castle which is the home of the 7th Earl of Rosse and his family so much of the residential areas of the castle are not open to the public. However the grounds and gardens are and this includes the on site science museum and café. Not any science museum though it is actually Ireland's Historic Science Centre. Here is also a reflecting telescope which was at one stage the largest in the world called the Leviathan. All in all it is very impressive, if you have the time go and see and visit.
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Walk on by the wonderful Ballycowan Catle perched on the edge of the Grand Canal just 4km from Tullamore. The castle was built in 1589 as a fortified house by Thomas Morres.
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This magnificent castle, which lies just outside Tullamore, is a fantastic example of a castle built for defense. It was built by Elizabethan officer John Briscoe and is open for the public to explore.
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Birr Castle has been the seat of the Parsons family since 1620. The place was named Parsonstown after them until the late 19th century, when it was renamed Birr.
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During the period 1170-1220 the Anglo-Normans began the Colonisation of Ireland, building Motte and Bailey Castles throughout Ireland. The wooden castle that stood on the top of the motte at Clonmacnoise was destroyed by fire and later in 1214 the Justiciar of Ireland, Henry of London, built a stone castle on the motte. This was to gain control over the midlands and guard the bridge across the River Shannon. This was a very significant period in history as it marks the time when Clonmacnoise went into decline as a monastic city. Before the normans arrived these lands belonged to the abbot of Clonmacnoise. In 1216 Henry of London was ordered to compensate the abbot for his lands and any others items like animals or fruit trees the abbot may have lost. There is a large bank and a very deep fosse surrounding the D-shaped motte. The castle was destroyed during the gaelic resurgence in the late 13th early 14th century. Originally it had three storeys but very little remains of the castle today. The ruins are very dangerous, delicately balanced on the edge of the mound. http://www.megalithicireland.com/Clonmacnoise%20Castle.html
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Walk on by the wonderful Ballycowan Catle perched on the edge of the Grand Canal just 4km from Tullamore. The castle was built in 1589 as a fortified house by Thomas Morres.
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This enchanting castle nearby to the town of Tullamore is known to be one of the finest gothic-style castles in Ireland. It features turrets, towers, and hand-carved stairways as well as a beautiful outdoor area covered in lush greenery, forest paths, and fairy doors. The long avenue to the forecourt is fully open to the public, if you wish to partake in one of the daily guided tours you can call up in advance and book +353 57 932 3040
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Yes, several castles in Offaly offer family-friendly attractions. Birr Castle Demesne is particularly well-suited for families, featuring extensive gardens, Ireland's Historic Science Centre, and a children's adventure playground. Charleville Castle also has beautiful outdoor areas with forest paths and fairy doors that children often enjoy.
Many castles in Offaly are surrounded by opportunities for outdoor activities. For instance, near Birr Castle, you can enjoy walks like the Birr Castle Riverwalk Trail. The region offers various easy hikes, including the Lough Boora Mesolithic Route and the Grand Canal Greenway. For cyclists, there are numerous road cycling routes, such as the Birr Cycle Hub loops. You can also find waterfall hikes in the Slieve Bloom Mountains, like the Glenbarrow Eco Walk, which are accessible from various points in the county.
The best time to visit Offaly castles is generally from late spring to early autumn (May to September). During these months, the weather is milder, and the extensive gardens and demesnes, such as those at Birr Castle, are in full bloom. Seasonal guided tours, like those for the interiors of Birr Castle, are also typically available during the summer months.
While some towns like Birr and Tullamore (near Charleville Castle) have bus services, direct public transport to many of the castles can be limited. It is often recommended to travel by car to fully explore the castles and their surrounding areas at your own pace. Check local bus schedules for specific routes to the nearest towns.
Policies on dogs vary by castle. While the interiors of most castles do not permit dogs, many have extensive grounds or nearby trails where dogs are welcome, often on a leash. For example, the demesne of Birr Castle allows dogs in certain outdoor areas. Always check the specific castle's policy before visiting. Many of the walking routes in Offaly are also dog-friendly.
Accommodation and dining options are available in towns near the castles. Birr town offers choices near Birr Castle, and Tullamore provides options close to Charleville Castle. For a unique experience, Kinnitty Castle operates as a four-star hotel, allowing guests to stay within a historic castle setting. Many castles also have on-site cafes, such as the one at Birr Castle Demesne.
Birr Castle is unique for its blend of scientific heritage and stunning gardens. It's home to the 'Leviathan of Parsonstown,' a massive 19th-century telescope that was once the largest in the world. The demesne also features Ireland's Historic Science Centre, showcasing the Parsons family's contributions to astronomy and engineering, alongside 120 acres of parklands and gardens with over 5,000 plant species.
Charleville Castle is a magnificent Gothic-style castle built between 1800 and 1812. Designed by Francis Johnston, it's considered one of Ireland's finest examples of Gothic Revival architecture, featuring impressive turrets, towers, and ornate interiors. It's also set within one of Ireland's last surviving primordial oak woods and has a reputation as one of Ireland's most haunted castles, adding to its mystique. You can learn more about its history and paranormal stories on guided tours.
Leap Castle, located near Roscrea, is widely known as 'Ireland's most haunted castle.' It has a turbulent and bloody history, including fratricidal conflict and an infamous oubliette. Its eerie atmosphere and rich lore of paranormal activity make it a unique experience for those interested in history and ghost stories. Visitors can take tours to explore its various sections, including the 'Bloody Chapel,' and hear tales of its resident spirits.
Yes, you can stay overnight at a castle in Offaly. Kinnitty Castle, a 19th-century neo-Gothic structure, operates as a four-star hotel. It offers a luxurious historical retreat and is reputedly haunted by ghostly monks, providing a unique overnight experience.
Clonony Castle is a well-preserved 16th-century tower house built by the MacCoughlan clan. It showcases typical tower house features such as machicolation (a floor opening for dropping objects on attackers), a murder hole, gun-loops, and a bawn (a defensive wall). It also has a fascinating connection to the Tudor period, as it was ceded to Henry VIII, and two cousins of Anne Boleyn are reportedly buried on its grounds.
Yes, Offaly offers several intriguing castle ruins. Clonmacnoise Castle Ruins, built in 1214, are located west of the famous monastery and offer a glimpse into the Anglo-Norman period. Ballycowan Castle – old ruin, a fortified house built in 1589, is perched on the edge of the Grand Canal. You can also explore Srah Castle, another historical ruin in the county.
To fully experience Birr Castle Demesne, including its extensive gardens, Ireland's Historic Science Centre, and the 'Leviathan' telescope, you should plan for at least 3-4 hours. If you wish to take a guided tour of the castle interiors (available seasonally) or enjoy a meal at the cafe, you might extend your visit to half a day or more.


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