425 Fifth Ave. between 38th and 39th streets, #46B $899,000

common charges: $597.40 Monthly Taxes: $250.27 Broker: David Lewandowski/Prudential Douglas Elliman About 640 square feet, this Michael Gravesdesigned condo is located on the 46th floor of a full service building with amenities galore. The living area has cherry wood built-ins and a custom Murphy bed. The kitchen has cherry wood cabinets, granite countertops, a slate floor, and top-of-the-line stainless steel appliances. The bathroom has subway and mosaic tiling, a marble vanity, a soaking tub, and a separate shower stall. This rarely used corner studio, which comes with furniture and a 42-inch Plasma television with a DVD player, has panoramic views from the East River (including takeoffs from the East 34th St. Heliport) to the Statue of Liberty. It also features a close-up of the Empire State Building.

16 E. 23rd St., at Madison Avenue, #6 $3.495 million

Maintenance: $3,993 Broker: Michael Raab/Corcoran This Flatiron District duplex, approximately 3,400 square feet, is located on the fifth and sixth floors of an 1860 cast iron building with a keyed elevator and common storage. The foyer, large living and dining area, open kitchen, bathroom, and master suite (including a dressing area and ample closet space) are upstairs. Two additional bedrooms and library, which are part of the upstairs duplex, and a separate apartment with a foyer, large sleeping and living area, kitchen, and bathroom, are downstairs. There are oak floors, large windows, and high ceilings throughout this co-op. Both floors face north and overlook the Empire State Building, the Metropolitan Life Tower, and Madison Square Park, including the ever-fluctuating Shake Shack line.

21 E. 22nd St., between Broadway and Park Avenue South, #8D $1.499 million

Maintenance: $1,089.91 Broker: Alexandra Bellak/Prudential Douglas Elliman This Flatiron District converted one-bedroom, about 1,000 square feet, has views of the Empire State Building and Madison Ave. The living and dining area, which has large windows, is being used as a den and office. The open kitchen has granite countertops, a Sub-Zero refrigerator, Bosch stove, and Míele dishwasher. The bedroom has a walk-in, California-style closet and a pocket door. The bathroom has slate floors, a tub, and separate, four-headed spa shower. This co-op also includes oak plank floors, nearly 12-foot beamed ceilings, and central air conditioning. It is located in a petfriendly, full-service building with a laundry room on each floor and a landscaped roof deck.