Garrison Walls

Aerial view of Garrison Walls

Free Entry

Open any reasonable time during daylight hours


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

Before You Go

With a history spanning 350 years, the defences of the Garrison on St Mary's form one of the most remarkable and impressive coastal defence systems in England.

Read more about the history of Garrison Walls.

Before You Go

Access: Situated above Hugh Town, the walls are best accessed on foot or by bike up the steep winding streets.

Facilities: Shops, food outlets and toilets are available in Hugh Town.

Other Information: You will need approximately two hours to walk the entire circuit of the walls.

The Powder House houses an exhibition about the Garrison's history. It is located opposite the main gate and is open every day during daylight hours.

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

Information panels around the ramparts take you through the long history of these impressive defences. Don't miss the Sallyport and the Powder House, with its exhibition and 3D map.

Harry's Walls, also dating from the 16th century, can be found across the harbour.

Elsewhere on St Mary's you'll find 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.


Your support helps in so many ways

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
'step into englands story