Mount Desert Island, known locally as MDI, is a tranquil island that serves as a home to 10,000 people. In the summer, the island hosts thousands of tourists, including high-profile guests like Martha Stewart and the Rockefeller family. MDI is officially part of Acadia National Park, and the highest point on the island is Cadillac Mountain.

The 47,000-acre park stretches to Isle au Haut and the Schoodic Peninsula. Tourists on MDI stay busy by sightseeing, hiking, camping, shopping, and visiting local attractions. The Holbrook Island Sanctuary and Warren Island State Park are also popular destinations among guests.

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