Big Double Island, Orcas Island, Washington. This nearly 19-acre isle in Westsound lies off Orcas Island. The four-bedroom furnished lodge home features a chef's kitchen with a Viking stove, great room with stone fireplace, gym, and billiard room.

The property has outbuildings for housing boats, guests, and an art studio, and includes almost 5,000 feet of waterfront with deepwater moorage at a new dock. Ownership comes with three buoys and two slips on Orcas Island. $7,000,000. Wally Gudgell, Windermere Real Estate, (360) 376-2172.

Potato Island, Branford, Connecticut. Also called Dove Island, this 1.1-acre property is in Long Island Sound's Thimble archipelago. The 1912 four-bedroom house uses solar power and natural gas with generator backup, and features an open-concept layout, painted wood floors, a breakfast nook, and 360-degree water views.

Outside are a wraparound porch, heated lap pool, planted lawn, and dock. $5,900,000. Willard Finkle, Page Taft/Christie's International Real Estate, (203) 506-7300.

Eagle Island, Tower, Minnesota. This 5.5-acre Lake Vermilion island comes with membership in a nearby marina. Built in 2016 of locally sourced stone and wood, the rustic-modern, custom-furnished three-bedroom house features a double-height living room with floor-to-ceiling fireplace, an open kitchen with island, an elevator, and a crow's nest with water and island views.

The grounds include a yard and a dock. $1,995,000. Mike Lynch, Lakes Sotheby's International Realty, (612) 619-8227.

Little Freese Island, Deer Isle, Maine. Tucked between two coves, this island comprises more than 7 wooded acres and 2,600 feet of granite shore and rocky beaches.

The open main space of the three-bedroom house leads out to a deck, lawns, gardens, and a two-story art studio; another studio/boathouse sits on an included 4-acre lot on the nearby mainland. $795,000. Joseph Shortwell, LandVest/Christie's International Real Estate, (207) 236-3543.

Darien, Georgia. Eagle Island lodge is a four-bedroom home accessible only by boat. Built completely from recycled materials in 2002, the house has a floor-to-ceiling fireplace, cypress floors, and a wraparound porch with hot tub.

Set on 10 acres, the property has an outdoor kitchen, a dock, and a gazebo. Ownership includes a half-acre buildable lot on nearby Sapelo Island. $2,300,000. Page Aiken, DeLoach Sotheby's International Realty, (912) 258-6000.

Crosslake, Minnesota. Part of the Whitefish Chain, this 1-acre island has a riprap-fortified shoreline and a private bridge to the mainland. The 1972 two-bedroom cabin features knotty-pine walls, tiled floors, an eat-in kitchen, a sunroom, and a gas fireplace; a complete renovation added multiple utility and other updates.

Outside are a wraparound covered deck, lawn, and dock. $350,000. Brent Anderson, RE/MAX Lakes Area Realty, (218) 838-1399.