Bay view toward Mount Desert Island from the mainland gateway

Maine

Mount Desert Island Gateway

Last updated March 12, 2026

Mount Desert Island is the heart of the Acadia region — a compact island holding most of the national park, the town of Bar Harbor, and the quieter villages of Northeast and Southwest Harbor. Everyone reaches it the same way: across the bridge from the mainland gateway at Trenton.

Basing at the gateway means you can dip onto the island for a park day or a Bar Harbor evening and retreat to somewhere calmer and closer to the water at night.

Best For

  • Island day-trippers who want a quiet home base
  • Families visiting Acadia and Bar Harbor
  • Travelers who prefer ocean access to in-town crowds

Best Seasons

  • Summer for full island access
  • Fall for foliage and calmer villages
  • Late spring for early-season quiet

Things to Do

  • Explore Acadia National Park across the island
  • Spend an evening in Bar Harbor
  • Visit Northeast and Southwest Harbor
  • Take a boat tour from an island harbor
  • Return to the mainland for a fireside night by the water

Where to Stay

Stilla homes in this destination

Aerial view of Eagles Nest above its private rocky shoreline on the Maine coast near Acadia

Stilla

Eagles Nest

Acadia by day. Your own shore by evening.

Cross back over the bridge at the end of the day and the crowds stay on the island. Three bedrooms, a fire pit and your own rocky shore on two wooded acres — twenty-five minutes from Acadia.

Trenton, MaineSleeps 83 bd2 ba

Frequently Asked Questions

It is the mainland approach to the island — the Trenton area you cross before the bridge — offering easy access to Acadia National Park and Bar Harbor while staying off the island itself.

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