1 New York City The restoration of this apartment’s 1879 building in Manhattan’s Flatiron District won a Landmarks Conservancy award. The full-floor, two-bedroom condo has 13.5-foot ceilings, wide-plank oak floors, cast-iron columns, painted- and exposed-brick walls, 10-foot windows, French doors to a planted balcony, direct elevator access, huge living area, industrial chef’s kitchen, and flex space for extra bedrooms. Residents share the neighboring building’s doorman and gym; Flatiron’s amenities, Chelsea, and Union Square are steps away. $5,495,000. Tony Testa, Corcoran, (212) 941-2627
2 Washington, D.C. Housed in a vast former workshop for helicopter engines, this three-bedroom apartment covers 5,077 square feet. The home features redbrick walls; exposed beams dangling chandeliers; sitting, media, and billiards areas; a gourmet kitchen; barn doors to the dining room; a primary suite with fireplace…