Best properties on the market

1. Portland, Maine Formerly a World War II power plant, this four-bedroom home sits on Casco Bay and has water views from most rooms. Amenities include a hot tub, a pool, and access to a boat mooring. A separate building could be converted to a guesthouse. $1,500,000. Peter Thornton, Legacy Properties/Sotheby’s International Realty, (207) 770-2292

2. Hamilton, Mont. Built in 1897, Tammany Castle was created to be a stable for a champion racehorse owned by copper king Marcus Daly, then one of the richest men in the world. Now a luxury four-bedroom residence, the building is located on a bluff surrounded by historic gardens at the heart of what was once Daly’s 1,000-horse stock farm. $2,950,000. Keith Lenard, Hall and Hall, (406) 542-3762

3. Monticello, Utah This unique cave home occupies four natural red-rock alcoves on a 110-acre property bordered on three sides by federal Bureau of Land Management properties. Solar panels provide all the power to the 5,000-square-foot residence, which has three bedrooms and a large, light-filled living room. The cave walls keep the living quarters at a cool 70 degrees when desert temperatures climb. $597,500. Brent D. Parker, @Home Realty Network, (435) 881-1000

Subscribe to The Week

Escape your echo chamber. Get the facts behind the news, plus analysis from multiple perspectives.

SUBSCRIBE & SAVE

Sign up for The Week's Free Newsletters

From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.

From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.

Sign up

4. San Francisco Albion Castle, which overlooks San Francisco Bay and the Golden Gate Bridge, was built in 1870 to house the Albion Ale and Porter Brewery. Later the headquarters of the Mountain Spring and Water Co., the building is now a four-bedroom home that sits atop springs that still produce 10,000 gallons of water a day. $1,349,000. Charlene Attard, Alain Pinel Realtors, (415) 608-8585

5. Stanfordville, N.Y. Built in 1860, this former railroad depot sits on a three-acre property that includes gardens, a one-bedroom guesthouse, a warehouse with a small glass-walled artist’s studio, and frontage on Wappingers Creek. The interior features 12-foot ceilings and original wainscoting. $675,000. Barbara Novak, Houlihan Lawrence/Christie’s International Real Estate, (845) 677-6161

Steal of the week

6. Mathews, Va. Built in 1894, Wolf Trap Lighthouse is a three-bedroom brick residence located atop an iron pier in the middle of Chesapeake Bay. The structure is being sold with a waterfront lot more than 3 miles away to be used as a boat launch. The building has a new roof but needs repairs. $288,000. Laura Pierce, ERA Bay and River Real Estate, (804) 694-9145