Architect Rafael Viñoly has spoken out about problems with his 432 Park Avenue skyscraper in Manhattan, currently the tallest residential tower in the western hemisphere.

Update: Rafael Viñoly sent Dezeen a public letter apologising for the comments he made about 432 Park Avenue. Read the full story »

As tenants begin to move in to the 1,396-foot (426-metre) tower on 57th Street, its architect has revealed that he is not entirely happy with the project.

"It has a couple of screw-ups," the Uruguayan architect reportedly said during a talk hosted by real estate brokerage Douglas Elliman at the building last week.

Viñoly then told the New York Post that "the first has to do with the windows".

Each of the building's 96 storeys features six windows, measuring 10 by 10 feet, on all four sides. On the inside, these are thickly framed – eating up floor space.

"That was Harry's idea," said Viñoly, referring to developer Harry Macklowe, who paid $440 million for the Drake Hotel in 2006 and razed it a year later to make way for the skyscraper.

Macklowe himself reportedly said that "penis envy" is driving Manhattan's swathe of supertall towers, which include Robert AM Stern's 220 Central Park South and SHoP's 111 West 57th Street.

Many have voiced their opposition to these projects over concerns that they will overshadow Central Park.

Related story Wave of super-tall towers in Manhattan sparks protests over shadows

Another of Viñoly's qualms with 432 Park Avenue is "the interior design and layout", which was created by Deborah Berke Partners – founded by the new dean at the Yale School of Architecture.

According to the Post, Viñoly's examples include issues with where the bathrooms are located.

During the Elliman event, Viñoly also attacked Pritzker Prize-winning architect Christian de Portzamparc's One57 tower on 57th Street.

"What is the name of that building by that French guy? It would have been better without all that glass. I think it is an absolutely horrendous building," he said.

Dezeen has contacted Viñoly's firm, which is based in New York, but is yet to receive a response.

This isn't the first time that the architect has held his hands up to problems with his buildings.

After his Walkie Tower in London melted a car on a nearby street in 2013, Viñoly admitted he knew its curvy facade would focus an intense beam of sunlight and said "we made a lot of mistakes with this building".

Photographs of 432 Park Avenue are by Arturo Pardavila.