Park Hyatt’s upcoming flagship hotel in New York will feature an artisanal spa called Nalai, which means ‘serenity’ in the language of the Lenape people – the original tribe of Manhattan.

Scheduled to open in Q3 of this year, the 13,000sq ft (1,208sq m) spa will be located on the 210-guestroom hotel’s 25th floor, providing sweeping views of the New York City skyline and partial views of Central Park.

A three-storey aerie at the top of the hotel will serve as an extension of the spa, comprising a steamroom, hot tub, changing rooms and an indoor swimming pool – which features underwater speakers that play an exclusive soundtrack from Carnegie Hall.

Treatments will range from ancient healing techniques to those which involve advanced technologies and beauty rituals.

The spa will release a limited inventory of seasonal treatments to the public for advance purchase six to eight weeks prior to the launch of each season – to be offered at a designated time each day. Prices will begin at US$350 (€260, £210) per treatment.

Products carried by the Nalai spa will include Carita Paris, H Gillerman Organics and Stemulation.

The hotel was designed by Pritzker Prize-winning architect Christian de Portzamparc and the Yabu Pushelberg firm carried out the interior design. The spa’s interior has expansive floor-to-ceiling windows which allow natural light to flood each space, creating the feeling of being in a French artisanal workshop – an ‘atelier’.

“Through our atelier approach, which utilises both state-of-the-art technology as well as ancient healing practices, Nalai will tune into each guest’s individual needs to promote wellness and rejuvenation,” said spa director for Nalai, Amy Olthoff.

The hotel will also feature a bar, restaurants and a fitness centre.