Greencastle Castle

📍 Greencastle, Donegal

🏛️ Attraction

Last updated: 28 April 2026

Overview

Greencastle sits on the north‑coast of County Donegal, on the mouth of Lough Foyle. The tiny fishing village is a gateway to the Inishowen Peninsula, known for its sandy beach, bustling harbour and the striking ruins of Greencastle Castle.

History / Background

  • 1305 – Richard Óg de Burgh, 2nd Earl of Ulster, built the stone castle from green freestone to control traffic on Lough Foyle and dominate the O’Donnells and O’Dohertys of Inishowen.
  • 1316 – The castle fell to the forces of Edward Bruce during the Scottish invasion of Ireland.
  • Over the next six centuries the fortress changed hands, endured sieges and gradually decayed, leaving a weather‑worn silhouette against the Atlantic sky.
  • Early 19th century – A Martello tower was erected nearby during the Napoleonic Wars to guard against a possible French invasion.
  • Early 1800s – The first proper pier was added, expanding the village’s role as a fishing port and ferry hub.
  • Late 20th century – The castle ruins were incorporated into the Inishowen Maritime Museum, allowing visitors to view artefacts recovered from local shipwrecks and learn about the region’s seafaring past.

What to See & Do

Castle ruins & Martello fort

Castlewellan Castle, Co Down
Castlewellan Castle, Co Down ©Tourism Ireland by George Munday

Explore the skeletal remains of the 1305 castle and climb the nearby round Martello tower for panoramic views of Lough Foyle, the Causeway Coast and the Inishowen hills.

Inishowen Maritime Museum & Planetarium

Armagh Planetarium
Courtesy Of Tourism Northern Ireland

Housed in the old Coastguard Station above the harbour, the museum displays a 19th‑century rocket cart, a Fanad Curragh, a wild‑fowling punt with swivel gun, and artefacts recovered from shipwrecks along the Donegal coast, including items from the Spanish Armada. The adjoining planetarium offers immersive shows of the night sky over the Irish Sea.

Lough Foyle ferry to Magilligan Point

The seasonal 15‑minute crossing links Greencastle with Magilligan in County Derry, providing a scenic shortcut to the Causeway Coastal Route and spectacular water‑level vistas.

Beaches & coastal walks

Bundoran Beach, Co Donegal. Wild Atlantic Way, WAW
Bundoran Beach, Co Donegal. Wild Atlantic Way, WAW Courtesy Gareth Wray Photography
  • Greencastle Beach – a kilometre of golden sand ideal for strolls and picnics.
  • Kinnagoe Bay – a sheltered, tree‑lined cove with unusual sea‑worn rock formations, ten minutes’ drive away.
  • Culdaff Beach, Five Finger Strand, Pollan Strand, Tullagh Strand – each within a short drive, offering dunes up to 80 m high and dramatic hill backdrops.
  • Ballymastocker Bay – a Blue Flag beach just a short drive north, perfect for swimming and photography. (Ballymastocker Bay)

Outdoor Activities

Greencastle’s location on Lough Foyle makes it a base for several water‑based pursuits. Local operators run fishing trips for sea trout and mackerel, as well as dolphin‑watching tours that often spot common dolphins and porpoises. The surrounding coastline offers marked walking routes, including the Inishowen Coastal Trail, which passes the castle and provides opportunities to spot seabirds and historic wreck sites.

Food & Drink

The village’s maritime heritage is reflected on the plate. Seafood restaurants such as the Ferryport Bar and Kealy’s Seafood Bar serve freshly caught fish, scallops and the famous Donegal chowder. Many establishments also host live traditional music sessions, giving visitors a taste of local culture alongside their meal.

Golf & Marina

Greencastle Golf Club, an 18‑hole links course founded in 1892, provides stunning views across the lough. The Greencastle Marina offers secure berthing for yachts travelling between Scotland, Northern Ireland and Donegal.

Local heritage

Visit the Irish National Fisheries College, enjoy traditional pubs such as the Ferryport Bar and Kealy’s Seafood Bar, and explore the lively village market.

Wildlife & Scenic Views

The promontory offers excellent bird‑watching opportunities. In spring and autumn you can see Brent Geese feeding on the nearby Green Island, while seals and terns are regular visitors to the shoreline. From the top of the Martello tower you can spot the Mourne Mountains, Carlingford Lough and the Cooley Peninsula on clear days.

Seasonal Highlights

  • Summer (June‑August) – The ferry runs regularly, daylight lasts until after 9 pm and the castle ruins are open until 19:00, giving plenty of time for walks and sunset views.
  • Spring (April‑May) – Fewer crowds, migratory birds arrive, and the museum’s seasonal opening times begin to align with school holidays.
  • Autumn (September‑October) – The changing colours along the coastal trail make for striking photography; the ferry operates on a reduced schedule.
  • Winter – The castle ruins remain accessible free of charge, though the museum may be closed and the ferry service is suspended.

Practical Information

  • Access: Castle ruins are free and open year‑round; no ticket required. The museum has seasonal opening times – check the latest schedule before you go.
  • Opening Hours: Castle ruins – 10:00‑19:00 (summer) or 10:00‑dusk otherwise. Museum – seasonal, typically 10:00‑16:30 (verify online). Ferry – seasonal, check local timetables.
  • Parking: Village car park adjacent to the harbour provides convenient parking.
  • Ferry: Seasonal service runs from the harbour promenade; check local timetables for exact dates.
  • Facilities: Restrooms, cafés and souvenir shops are located near the harbour and museum.
  • Getting there: Greencastle is reachable via the N13 road; the ferry offers a shortcut to the Causeway Coastal Route, saving about 1½ hours of driving.
  • Best time to visit: Summer months offer the most reliable ferry service and longer daylight for walks, while spring brings quieter beaches and the chance to see migratory birds.