Harry's Walls

General view of Harrys Walls
Aerial view of Harry's Walls.

Free Entry

Open any reasonable time during daylight hours


St Mary's, Isles of Scilly, TR21 0NE

Before You Go

These two artillery bastions and length of curtain wall on St Mary's in the Isles of Scilly belong to a fort begun - despite its name - in 1551, during the reign of King Edward VI. This fort was left unfinished when the headland now known as The Garrison was chosen as the site of the islands' main fortress, Star Castle.

Read more about the history of Harry's Walls.

Before You Go

Access: Situated overlooking the main harbour of St Mary's, the site is best accessed on foot or by bike.

How to Find it: Shops, food outlets and toilets are available in Hugh Town.

Please be aware: English Heritage does not permit drone flying from or over sites in our care, except by contractors or partners undertaking flights for a specific purpose, who satisfy stringent CAA criteria, have the correct insurances and permissions, and are operating under controlled conditions.


Plan a Great Day Out

The Garrison Walls were also built in the 16th century and can be found across the harbour.

Elsewhere on St Mary's you can visit three fascinating prehistoric sites - Porth Hellick Down Burial Chamber, Innisidgen Lower and Upper Burial Chambers and Bant's Carn Burial Chamber and Halangy Down Ancient Village.

At the Isles of Scilly museum in Hugh Town you can discover more about the rich history of the archipelago.


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Your membership provides valuable support for our essential work, while you can enjoy free access to the beauty and inspiration of our magnificent historic places. 


About us

English Heritage cares for over 400 historic buildings, monuments and places - from world-famous prehistoric sites to grand medieval castles, from Roman forts on the edges of empire to a Cold War bunker. Through these, we bring the story of England to life for over 10 million people each year. The English Heritage Trust is a charity, no. 1140351, and a company, no. 0744722, registered in England.

How We Are Funded

Our target is to become completely self-funding by 2023. Our confidence in achieving this is based on our track record. During the past 10 years, our commercial income has doubled and we have raised nearly £60m in donated income.

  • 66% Self-generated income
  • 20% One off capital grant
  • 14% Government funding
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