Dublin Castle is one of Ireland's most important symbols of power. Built on top of a Viking settlement, this castle from the 13th century is truly more of a complex of structures. For many years under English and later British rule, the castle served as the government complex. And now, it is a popular tourist site.

Today you can still view the remains of the 13th-century structure as part of the guided tour. Some of the castle's highlights include a large collection of decorative arts, formal portraits of rulers and royalty, and historic furniture. Don't forget to stop by Dublin Castle's Gothic Revival Chapel Royal and the castle gardens, which date back to the early 17th century. The Ladies Drawing Room, the Throne Room and St. Patricks Hall are also worth visiting.

Address: Dame Street, Dublin 2

Few places in Ireland contain more medieval buildings than the heritage town of Trim. Trim Castle is foremost among those buildings. The Trim Castle is a must-see if you want a castle to brag about after your trip.

You will probably know the iconic features of this magnificent Norman Irish castle because this is where Mel Gibson shot the movie Braveheart. Trim Castle underwent a 30-year construction that began in 1176. A massive three-story keep serves as the main fortification. This enormous cruciform-shaped tower with 20 sides was nearly impregnable during its time. A ditch, curtain wall, and water-filled moat served as its defenses. You may now look down over the keep's interior from modern walkways, giving you a chance to see the size and thickness of the mighty castle walls.

Address: Castle St, Trim, Co. Meath

The coastal Dunluce Castle in Northern Ireland should be at the top of your list if castle mystery is more your style. The ancient castle is perched on top of a cliff along the remote northern coast.

It is a long-abandoned ancient Irish castle that is considered an iconic part of Ireland’s architectural culture and history. There are legends about fairies and fierce battles that happened on the site, and the remains are claimed to be haunted by the ghost of a woman who died there. The guide you receive at entry will help you on your journey into the unique history of Dunluce. Dunluce is now a beautiful ruin. It really does feel like something out of a movie set when you sit atop the sharp rocks and look down at the blue sea crashing below.

Address: 87 Dunluce Road, Bushmills, County Antrim

One of the best castles for experiencing the medieval era is Bunratty Castle. The castle was once part of a Viking trading camp in 970. One of the largest collections of medieval furniture in Ireland is housed there, which has been exquisitely restored to largely original condition.

On the site, there is a Folk Park, a living 19th-century village with 30 buildings that mimic daily life in Ireland in the 1800s. The village is delightful, particularly for kids who may explore the recreated farmhouses, village streets, and buildings with the soundtrack of Irish music. One of the most interesting activities at Bunratty Castle is the medieval banquet, which you may join for an evening of delicious food, dancing, and music.

Address: Bunratty West, Bunratty, Co. Clare

Enniskillen Castle, situated beside the River Erne in County Fermanagh, was built almost 600 years ago by Gaelic Maguires. It is thought that the turrets and massive fortress walls were built to defend the land in Northern Ireland in the early 1400s. In the 17th century, it became an English garrison fort and later served as part of a military barracks.

Two museums that highlight and preserve Fermanagh culture are now housed in the castle. The history of the region is presented in the Fermanagh County Museum, and military equipment from the 17th century is on exhibit at the Inniskillings Museum. There are also special exhibitions throughout the year. Spend some time exploring the two museums and the well-kept grounds.

Address: County Fermanagh, Enniskillen BT74 7HL, Northern Ireland

The Cahir Castle, one of Ireland's largest castles, still mainly has the same structure as when it was built. It is one of Ireland’s largest and best-preserved castles.

Being considered as of the nation's most powerful strongholds against invaders, the castle was built on a solid rock along the River Suir. The Cahir Castle should be included on your list if you want to see and experience authentic, original elements of a castle. There are hour-long guided tours available, as well as an audio-visual show that recounts the castle's long history. The castle is also a popular destination for tourists because of its use as a background for movies and television shows like The Tudors and Excalibur.

Address: Castle Street, Cahir

Donough O'Brien, who ruled Dromoland in 1014 and is a family name of high nobility in Ireland, is the ancestor of the beautiful 16th-century Dromoland Castle.

Travelers now visit the 450-acre estate, resting in the lavish bedrooms with canopied beds and beautiful furniture fit for a king. Whatever your preference, you can't help but feel like you are walking in the footsteps of kings at Dromoland Castle. The estate is a well-liked location for weddings and includes a spa, an 18-hole championship golf course, and outdoor activities. Even if you are not staying at Dromoland Castle, you can stop by to take a look at the grounds since it is a destination rather than a day excursion.

Address: Newmarket-On-Fergus, Co. Clare

The Castle Ward is an unforgettable experience for lovers of Game of Thrones. This 18th-century castle is the main filming location for the show.

Participating in a medieval banquet or signing up for the on-site ClearSky Adventures, which allows you to try on Game of Thrones costumes with specialists who teach you how to shoot arrows in the courtyard, are exciting ways to enjoy a trip to Castle Ward. Visitors who are not Game of Thrones fans also will love the castle. Castle Ward, a unique double-sided mansion, is situated in a peaceful garden with views of Strangford Lough. The Castle Ward estate offers some great and interesting walks and even another castle; Audley's Castle.

Address: Downpatrick Road, Strangford, County Down

The ruins of Dunamase Castle, a well-liked stop in County Laois in the Province of Leinster, can be found in Central Ireland. Given that it is only a short drive from Dublin, visiting The Rock of Dunamase is a great day trip.

Those who enjoy doing some own exploration should visit the ruins of Dunamase Castle. The Rock of Dunamase is the name of the structure, of which there are now only remnants. Although it was built in the Middle Ages, archaeology study indicates that it truly dates back to the 9th century, and was once occupied by Vikings. The location, which has a storied history, is now a national monument. It is situated 46 meters above the surrounding countryside on Ireland's east coast and is open to the public for free.

Address: Aghnahily, Dunamaise, Co. Laois

If you're looking for some amusement beyond simply visiting the castle, the Glenveagh Castle, which is a part of the Glenveagh National Park, is a great place to add to your list. This remote castle from the 19th century is located close to the Derryveagh Mountains and served as a dreamy getaway for its private owners who lived there in the 1800s.

Hollywood icons like Greta Garbo and Charlie Chaplin were known to visit the castle as personal friends of the owners. It's a delight to explore the 40,000 acres that surround the castle. It's definitely worth a visit, house and gardens are beautiful and the park itself is a fantastic visitor attraction. Magnificent mountains, pristine lakes, waterfalls, glens, native oak woods, and a picturesque castle with all its original furnishings, all of which are welcomed you to explore!

Address: Church Hill, Letterkenny, County Donegal