Glenarm Castle & Garden, Glenarm Castle Estate, (external) Co. Antrim - Embrace a Giant Spirit
Glenarm Castle & Garden, Glenarm Castle Estate, (external) Co. Antrim - Embrace a Giant Spirit Courtesy of Tourism Northern Ireland

Glenarm Village and Castle – Historic Coastal Spot

📍 Glenarm, Antrim

🏛️ Attraction

Last updated: 26 May 2026

Overview

Glenarm sits on the North Channel coast of County Antrim, marking the southernmost point of the famous Glens of Antrim. With a population just over 500, the village punches well above its weight in history, horticulture and seaside character. The focal point is Glenarm Castle, the ancestral seat of the Earls of Antrim, which anchors a sprawling estate complete with an award-winning four-acre walled garden, woodland trails, a heritage centre and a bustling marina. Visitors can trace centuries of MacDonnell heritage, hunt for spring tulips, or simply unwind with a coffee overlooking the harbour. It’s a compact coastal stop where aristocratic history meets working waterfront life.

A Living History

The Glenarm story stretches back to the early Christian kingdom of Dal Riada, which controlled the region between the 5th and 7th centuries. By the 13th century, a stone castle stood on the estate, first recorded in a 1270 Inquisition and held by families including the de Galloways and the Bissets. The MacDonnells took control in the early 1500s, transforming Glenarm into a regional power base.

The castle you see today was built by Sir Randal MacDonnell, 1st Earl of Antrim, in 1636. Like many historic Irish estates, it faced hardship: fires in the 18th and 20th centuries left sections in ruins, prompting the 5th Earl to rebuild the main house in 1750. Further Georgian extensions followed in the 1800s. The estate also bears witness to darker chapters. During the Great Famine, the Earl established soup kitchens for tenants, while a cholera outbreak in 1854 left a mass grave near St Patrick’s Church – a sobering reminder of the area’s past.

Since the 1990s, the family has progressively opened the estate to the public. The restored Barbican Gate, once a defensive stronghold, now serves as a welcoming entrance. Today, the walled garden alone has earned international recognition, taking home the 2023 Historic Houses Garden of the Year award.

What to See & Do

The estate and village offer a mix of guided heritage experiences, outdoor trails and relaxed dining options:

  • Castle Tours: Led by family butlers, these guided walks run from mid-March to early November. You’ll step into the Drawing Room, Great Hall and Blue Room, hearing stories about the MacDonnell dynasty and viewing original artefacts. Advance booking is essential.
  • Walled Garden & Woodland Walk: Spanning four acres, the garden was meticulously restored by Lord and Lady Antrim. It features a yew circle, heritage fruit trees, a working glasshouse, seasonal flower displays and sweeping views across the estate. The adjoining woodland trail is a quiet spot for spotting red squirrels, hedgehogs and spring wild garlic.
  • Antrim McDonnell Heritage Centre: An interactive exhibition tracing the clan’s journey from 14th-century Scottish migrations to their enduring role in local history.
  • Dining on the Estate: The Tea Room, housed in the distinctive Mushroom House, serves breakfasts, Ulster fry, the locally sourced Glenarm Shorthorn burger and traditional afternoon tea. Dogs are welcome in the outdoor seating area. For lighter bites, try the Milk Parlour for hand-crafted ice cream or the Potting Shed Café.
  • Marina & Waterfront: Glenarm Marina provides 40 serviced pontoon berths and acts as a launch point for coastal cruises, sea angling and boat tours along the rugged North Channel shoreline.
  • Family & Outdoor Activities: Children can tackle the Woodland Adventure Play Area, featuring rope bridges and climbing nets. Dog owners will appreciate the dedicated agility park, while the estate occasionally offers Mini Land Rover hires and monthly guided walks on the third Sunday of each month.

Seasonal Highlights & Events

Glenarm’s calendar shifts with the seasons, drawing visitors year-round:

  • May: The Tulip Festival turns the walled garden into a vibrant canvas of colour, paired with family activities and guided horticulture talks.
  • July: The Highland Games take over the village green with traditional caber tossing, pipe bands, live music and local food stalls.
  • November–December: The village transforms for the festive season with illuminated walks, a Christmas market and seasonal storytelling events.
  • Year-round: The Dalriada Festival and Summer Madness Christian festival rotate through the village, alongside regular art exhibitions and heritage talks.

Practical Information

  • Getting there: Glenarm sits on the Causeway Coastal Route, roughly 30 km north of Belfast. Drive via the A2 or take the Ulsterbus 212 service from Belfast and Ballymena. The nearest rail station is Ballymena, about 15 km away.
  • Opening hours: Castle tours run 17 March to 1 November (exact dates published on the estate website; booking required). The walled garden and woodland trails are open daily from 10:00 to 17:00, with reduced hours in winter. The Heritage Centre follows the same daily schedule but closes on major public holidays. The Tea Room serves breakfast from 10:00 to 11:30 and lunch until 16:00, closed Christmas Day and New Year’s Day.
  • Admission: A combined castle tour and garden ticket costs €12 for adults and €8 for children (ages 5–15). Garden-only entry is €6, and the Heritage Centre is €4. Family passes and senior concessions are available.
  • Accessibility & Pets: Most garden paths are paved and wheelchair-friendly. Castle interiors have limited access due to original staircases. Dogs are welcome on leads in the tea room garden, marina promenade and dedicated dog park.
  • Parking & Contact: Free parking is available near the castle entrance, with a separate pay-and-display lot by the marina. For bookings and updates, visit www.glenarmcastle.com or email info@glenarmcastle.com. Ocean View Pods on the estate grounds book up early in summer.

Nearby Attractions

Glenarm makes a natural base for exploring the wider north coast:

Plan to allow at least half a day to explore the castle, garden and marina. Book castle tours in advance during peak season, and check the estate website for temporary closures or event-specific opening times.