Gaztelugatxe Facts and Figures
The numbers, the dates and the names, each one traceable to the official record or to a sign on the path itself.
Hours, prices and access verified by the Gaztelugatxe Tours team — last checked 18 August 2026.
The islet at a glance
| Full name | San Juan de Gaztelugatxe · Gaztelugatxeko Doniene in Basque |
|---|---|
| What it is | A rocky islet carrying a hermitage dedicated to St John the Baptist |
| Region | Bizkaia, Basque Country, northern Spain |
| Coast | The Bay of Biscay, on the Cantabrian Sea |
| Between | The towns of Bakio to the west and Bermeo to the east |
| Joined to land by | A stone bridge, then a stone staircase |
| Postal address | 48130 Gaztelugatxeko Doniene, Bizkaia, Spain |
| Admission | Free. A timed permit is required in the busy months |
The climb, in numbers
| Steps to the hermitage | 241 |
|---|---|
| Path to the headland | Signed at 1.1 km and 25 minutes on the waymarker |
| Typical time on the steps | 20 to 30 minutes up, with stops |
| Round trip, roadside to roadside | Around 90 minutes to two hours |
| Surface | Made path, then stone steps, uneven in places |
| Handrails | On the exposed stretches |
| Shade on the return climb | Patchy — the reason mornings win in summer |
| Bell tradition | Ring it three times at the hermitage door |
The step count is the figure the Basque Government's tourism board publishes, and every trip listed on Gaztelugatxe Tours is built around it. Walk it slowly: 241 steps is not a long staircase by distance, but it turns constantly and the drop is on both sides.
A dated timeline
| When | What happened |
|---|---|
| 9th century | The first hermitage is believed to have been raised on the summit |
| 12th century | The site became a convent |
| Two centuries later | The friars left, taking the valuables with them |
| Across the centuries | Fires and battles forced the church to be rebuilt more than once |
| 2016 | Filmed for television as a fictional island stronghold |
| 2017 | The episodes aired, and visitor numbers changed permanently |
| Since | Access managed by free timed permit, capped by day |
The undated entries are deliberate. The official record confirms fires and rebuilding without fixing years to them, and a table is exactly the place where an estimate would be read as a fact. The same caution applies to the fishing port at Bermeo ten minutes east, whose own records start later than its harbour does.
The name, and what it means
| Gaztelugatxe | Joins the Basque words gaztelu and aitz, and comes out as castle rock |
|---|---|
| San Juan | St John the Baptist, to whom the hermitage is dedicated |
| Doniene | The Basque form of the saint's name, as on the waymarkers |
| Laguntza | Basque for help or aid, on the tiled plaque at the hermitage |
| Bizkaia | The province, written Vizcaya in Spanish |
| Gernika | The Basque spelling; Guernica in Spanish and in the painting's title |
On screen
| Filmed | 2016 |
|---|---|
| Aired | Season seven, 2017 |
| Played | The approach to a fictional island stronghold |
| What is real | The bridge, the staircase, the rock and the sea |
| What was added | The fortress on the summit, which does not exist |
| Nearby on the same production | Itzurun beach at Zumaia, and Muriola beach at Barrika |
The full account of which scenes were shot where, and what the camera invented, sits on the Dragonstone page.
The coast around it
| Urdaibai | The protected estuary reserve behind Mundaka and Bermeo |
|---|---|
| Bermeo | Working fishing port, ten minutes east |
| Mundaka | Surf town at the estuary mouth, known for a long left-breaking wave |
| Gernika | Seat of the Assembly House and the Tree of Gernika |
| Bakio | Beach town to the west, with txakoli vineyards on the slopes |
| Txakoli | The sharp young white wine made on those slopes |
| Nearest airport | Bilbao, roughly 40 minutes by road |
| Departure cities for guided trips | Bilbao and San Sebastian |
Use the numbers: the permit and the staircase are explained on the access and climb page, the stops on things to do, and the practicalities on the visiting guide. To turn the figures into a booking, compare every Gaztelugatxe tour by price, duration and time on the islet, or start with Gaztelugatxe guided tours.