By The Cornwall Guide. Last updated 12 Jan 2022 Extensive defensive walls and earthworks dating back to the 16th century Facebook Twitter Pinterest WhatsApp Select ratingGive Garrison Walls 1/5Give Garrison Walls 2/5Give Garrison Walls 3/5Give Garrison Walls 4/5Give Garrison Walls 5/5 No votes yet Location Isles of Scilly Isles of Scilly Go to website » Attractions near Garrison Walls King Charles Castle Harrys Walls Cromwell's Castle The Old Blockhouse Tresco Abbey Gardens