Standing sentinel in Derbyhaven Bay, Fort Island (also known as St Michael’s Isle) offers explorers a unique blend of religious and military history. Connected to the mainland by a causeway, this small isle hosts both the ruins of St Michael’s Chapel and Derby Fort, making it a fascinating destination for history enthusiasts.

What Makes It Special:

  • Accessible via tidal causeway
  • 12th-century chapel ruins
  • 17th-century Derby Fort
  • Coastal wildlife spotting
  • Perfect photography spot
  • Rich historical significance
  • Views across Derbyhaven Bay

Historical Significance:

  • St Michael’s Chapel dates from 12th century
  • Derby Fort built in 1645
  • Strategic military position
  • Ancient religious significance
  • Maritime defense history
  • Archaeological importance
  • Connection to Civil War period

Your Journey: Access is via the causeway from Derbyhaven – check tide times before visiting, although accessible at all times in strong winds and high tide there may be flooding on the road. The island is small but packed with interest, featuring both the circular Derby Fort and the atmospheric chapel ruins. The walk around the isle offers views across the bay and towards Langness Peninsula.

Essential Details:

  • Location: Derbyhaven Bay
  • Access: Road
  • Duration: 30-60 minutes exploration
  • Terrain: Rough grass paths
  • Best visited: Low tide
  • Free access
  • No facilities on island

Pro Tips:

  • Check tide times before visiting – if high tide it may break over the roadway.
  • Wear suitable footwear
  • Can be very exposed – dress appropriately
  • Great for bird watching
  • Bring a camera
  • Morning light best for photos
  • Perfect for history enthusiasts

Make It A Day: Combine your visit with exploring Derbyhaven beach or walking the Langness Peninsula. Close to Castletown for refreshments and additional historical sites. Consider timing your visit with low tide for optimal exploration time.