American architect Richard Meier has followed up teasers of a black tower planned for New York's East River with a wider set of images showing the firm's interiors for the building.
685 First Avenue will occupy a 32,365-square-foot (3,000-square-metre) site between East 39th and 40th streets, just down the river from the iconic United Nations building.
The 42-storey structure will be Meier's tallest in his home city, and will mark a rare departure from the Pritzker Prize winner's trademark white palette.

Curtain walls made from black glass and aluminium will clad all four facades of the cuboid tower.
"We asked ourselves, can formal ideas and the philosophy of lightness and transparency, the interplay of natural light and shadow with forms and spaces, be reinterpreted in the precise opposite ? white being all colours and black the absence of colour"" said Meier. The building will contain 408 rental units and 148 condominiums, with interiors also designed by Richard Meier & Partners.

At street level, retail units will open onto First Avenue and a double-height lobby will provide access for residents.
A cutout at the 27th and 28th floors will interrupt the otherwise flat riverside facade.
"The singular form of 685 First Avenue is borne of a desire to create an iconic building unique to Midtown Manhattan," Meier said.

"With advanced technologies and building materials, we seek an innovative and timeless design that adds to the history and ro...