America’s Most Mysterious Private Island Is For Sale At $72 Million—An Abandoned Palace And A Lake Monster Included
By Jim Dobson
A 45,000-square-foot unfinished villa. A legendary lake with its own monster. Cromwell Island in Montana is the country’s most extraordinary trophy property.
Tucked away in Flathead Lake, this 348-acre private island features almost three miles of untouched shoreline, thick forests, and a four-story stone mansion that resembles the start of a European palace more than a typical lake house. Its size is impressive, and even more surprising is that it was never completed.
Robert M. Lee, an explorer and conservationist, imagined the mansion before he died in 2016. Now, his unfinished villa sits at the center of the island. Its high ceilings and empty rooms, centered around a grand staircase, quietly reflect the feeling of a dream that was never finished.
Cromwell Island is now for sale through Hall and Hall for $72 million, making it the most expensive home listing in Montana. For the right person, it offers more than just a trophy property: a whole private island, the foundation for a self-sufficient estate, and the chance to continue the vision of one of the West’s most unique personalities.
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