Taking up one full block bound by West 34rd Street, West 35th Street, Tenth Avenue, and Eleventh Avenue, 66 Hudson Boulevard is currently the eighth-tallest building under construction in YIMBY’s end-of-year countdown. Designed by Bjarke Ingels Group, the glass commercial office supertall will literally put a spin on the idea of the outdoor terrace. The 65-story tower is being developed by Tishman Speyer, with foundations already progressing for the 1,031-foot-tall and 2.85 million square foot structure. The official non-marketing address for the project is 509 West 34th Street.

The site sits to the north of Norman Foster’s 50 Hudson Yards, which also takes up an entire parcel of land in the Hudson Yards District. Both projects required the demolition of old on-site buildings before excavation could begin. Future access for the two towers and the rest of Hudson Yards is readily available from the 7 train entrance at the southern tip of Hudson Park, on West 34th Street.

The Spiral’s architectural makeup consists of a three-tiered building massing. It is defined by the multiple levels of outdoor green terraces on every floor. They are connected and arranged in continuous diagonally-stepped setbacks up all four sides, from the podium to the flat top of the rectangular-shaped tower. There will be landscaping and trees on all terraces, including the building’s lower podium.

What makes this concept unique is the idea that every floor has access to the outside and greenery, no matter how high. Unlike other buildings that may only have one green roof or terrace, or several outdoor terraces separated between multiple floors, this concept ensures easy access and a breathable floor plan that lets workers move in and out without taking an elevator up or down for outdoor access. Spectacular views of the Hudson River, the Midtown skyline, and the morning sunrise and evening sunsets are another benefit of the tower’s profile and location.

As of now, foundation work is expected to be finished in the coming weeks before the structure begins ascending vertically above street level. The Spiral will extend the skyline of the Hudson Yards district to the north, and form a new section of tall buildings against the rigid grid of Manhattan. Pfizer is currently the largest future tenant, having signed for 800,000 square feet of space. The project is expected to cost around $3.7 billion.

Completion of The Spiral is expected sometime in 2022.

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