American designer Jamie Bush has decked out a New York apartment with 1970s furniture and contemporary pieces to fuse architectural designs that are new and old.

The unit designed by Bush, who is based in Los Angeles, is on the 60th floor of the 80-storey One Manhattan Square that completed last year in the Lower East Side neighbourhood.

With expansive views of the city's East River, the apartment has three bedrooms, a living room, dining area and a kitchen.

A feature of the decor is the mixture of colours and furniture, from curvy upholstered seating in light blue and pink colours in the living room to more geometric, rare finds.

Included is a 1950s walnut Vittorio Dassi bar, a black Hoop chair from 1972 by Piero Palange and Werther Toffoloni, and tall ladderback chair by the late Scottish architect Charles Rennie Mackintosh.

Other accent pieces are a Stilux chrome floor lamp, and an Italian chaise lounge from the seventies upholstered in green.

A dining room has views to New York's Governors Island, and a lamp by the late German industrial designer Ingo Maurer.

These vintage finds are paired with geometric pieces like an Arflex Vela Screen with coloured glass, and a wooden bunk bed in a yellow children's room by Brooklyn studio Casa Kids.

Continuing the project's strong combination of colours and design styles is a pale blue bedroom with a bright red desk and chair, a white mid-century Mushroom Table Lamp, Thonet's Hideout Lounge Chair.

A mustard-coloured drape hangs above a blue Lid bed by Blu Dot.

More neutral tones decorate the master bedroom, such as grey walls and linens, and soft pink and green accents.

The residence spans 2,347 square feet (218 square metres) and is one of the 815 residences at One Manhattan Square.

Designed by Adamson Associates and Extell Development Company, the skyscraper features a glass curtain exterior that scales 823 feet (metres) and interiors by New York firm Meyer Davis Studio.

The slender tower stands out from its surroundings, in an area bordered Chinatown and marked by low-income housing, and is nestled next to the Manhattan Bridge ramp and FDR Boulevard.

Further downtown, Magdalena Keck has designed an apartment within the Four Seasons Private Residences.

Other noteworthy New York apartments include a unit in Jean Nouvel's MoMA tower, a penthouse at Viñoly's 432 Park Avenue and a penthouse in Zaha Hadid's 520 West 28th.

Photography is by Stephen Kent Johnson.