Every country, and the places worth the trip 26,398 places across 240 countries Guess the country
Meridiela.

Spike Island

A star fort in Cork Harbour that held more prisoners than any jail in the world in 1850, and was a prison again until 2004.

Updated 19 October 2026

Typeisland fortress
WhereCork
Nearest cityCobh, about 15 minutes by ferry; Cork about 25 km
Best seasonApril to October
Time to allowHalf a day
Getting thereFerry from Kennedy Pier, Cobh; booking essential
EntryTicketed; includes the ferry and a guided element

Spike Island has been a monastery, a fort, a prison, a Victorian convict depot and an army base. Fort Mitchel, the bastioned star fort covering much of it, was begun in 1804 against a French invasion. From 1847 it was used as a convict depot for the Famine years and after, and by 1850 it held around 2,300 prisoners - at that point more than any prison in the world - in conditions where over a thousand died and are buried on the island; more than a thousand more were transported from here to Australia. The British held it as a Treaty Port until 1938. It became a prison again in 1985, saw a riot and fire in 1985, and closed in 2004. The tour covers the fort, the punishment block, the graveyard and the prison wings, and includes a guided introduction with free time after. Ferries run seasonally from Cobh and cancel in poor conditions.

History

The island, of 103 acres, was first the site of a monastic settlement, and its position in the harbour meant it was used at times for defence and as a prison; it is dominated by a bastion fort now named Fort Mitchel, and since the early 21st century it has been developed as a heritage attraction with €5.5 million of investment (Wikipedia, Spike Island, County Cork).

What you'll find

  • Fort Mitchel - the bastioned star fort begun in 1804.
  • The convict depot - where 2,300 were held in 1850, and the burial ground.
  • The modern prison wings - the buildings in use until 2004.
  • The harbour setting - Cork Harbour and Cobh across the water.

When to go

April to October; ferry service is seasonal and reduced outside summer. Booking is essential - sailings are limited and fill. Allow half a day including the crossing.

Things to know

Access only by the timed ferry, which cancels in poor weather and must be booked. A lot of outdoor walking on a large exposed site. The history is grim - a thousand deaths and mass transportation - and is told plainly.

Nearby

Cobh and Saint Colman's Cathedral are across the water; Cork city is up the river.

Key facts

Heritage statusnational monument of Ireland
Location51.8350° N, 8.2850° W · map

Source: Wikidata, item Q3777131, read on 18 October 2026.

What to pack for Spike Island

Chosen from what this place is for. Tap a kit for the full checklist.

  • Comfortable walking shoes - Sightseeing means kilometres of pavement and cobbles daily. Find on Amazon
  • Modest clothing - Shoulders and knees covered - the single most common requirement. Find on Amazon
  • A slim anti-theft daypack - Zips that close properly; keep it in front in crowds and on transit. Find on Amazon
  • A scarf or shawl - To cover the head or shoulders on entry; women especially at mosques. Find on Amazon

Some links on this page are Amazon affiliate links - if you buy through them we may earn a small commission at no extra cost to you.

All packing kits

Plan your trip

Where to start if Spike Island is going on the list.

Booking links on this page are affiliate links - if you book through them we may earn a small commission at no extra cost to you. It never changes what we write about a place.

Opening times, ticket prices and seasonal closures change - check the official source before you go: official site.

← More attractions & fun in Ireland

One place a week.

A short Friday email about one place worth knowing.