Underfloor air distribution (UFAD) is an air distribution strategy for providing ventilation and space conditioning in buildings as part of the design of an HVAC system.
 UFAD systems use an underfloor supply plenum located between the structural concrete slab and a raised floor system to supply conditioned air through floor diffusers directly into the occupied zone of the building.
 Thermal stratification is one of the featured characteristic of UFAD system, which allows higher thermostat setpoints compared to the traditional overhead systems (OH).
 UFAD cooling load profile is different from a traditional OH system due to the impact of raised floor, particularly UFAD may has higher peak cooling load than OH systems.
 UFAD has several potential advantages over traditional overhead systems, including layout flexibility, improved thermal comfort, improved ventilation efficiency, improved energy efficiency in suitable climates and reduced life cycle costs.
 UFAD is often used in office buildings, particularly highly-reconfigurable and open plan offices where raised floors are desirable for cable management.
 UFAD is appropriate for a number of different building types including commercials, schools, churches, airports, museums, libraries etc.
 Notable buildings using UFAD system in North America include The New York Times Building, Bank of America Tower and San Francisco Federal Building.
 Careful considerations need to be paid in the construction phase of UFAD systems to ensure a well-sealed plenum to avoid air leakage in UFAD supply plenum.
The New York Times Building is a skyscraper on the west side of Midtown Manhattan, New York City that was completed in 2007.
 Its chief tenant is The New York Times Company, publisher of "The New York Times" as well as the "International New York Times", and other newspapers.
 Construction was by a joint venture of The New York Times Company, Forest City Ratner (Forest City Enterprises's New York subsidiary), and ING Real Estate.
The Spiral is a proposed 65-floor skyscraper located in the Hudson Yards neighborhood of Manhattan, New York City.
 The project was announced in 2016 by real estate developer Tishman Speyer as a 1,005 foot skyscraper with 2.85 million square feet and 65 floors.
 The tower is being designed by Bjarke Ingels Group, the architectural firm behind One57.
Patrick Thomas is a graphic artist.
 His work has been used to illustrate book reviews and opinion pieces in the "New York Times".
 An exhibition of his screen-prints was held in The New York Times Building in 2009.
Eleven Times Square is a 40-story, 1,100,000 sqft LEED Gold-certified office and retail tower located on Eighth Avenue at 42nd Street in the Times Square neighborhood of Manhattan, New York City, directly across from the Port Authority Bus Terminal and immediately north of The New York Times Building.
 The tower was completed in 2011 and rises 601 ft , making it the 100th tallest building in New York City.
 It was developed by New York City-based SJP Properties in partnership with Prudential Real Estate Investors, and was designed by the renowned architect Dan Kaplan of FXFOWLE.
229 West 43rd Street, formerly known as The New York Times Building, is an 18-story (267 ft ) office building, located at 229 West 43rd Street between Seventh and Eighth Avenue near Times Square in Manhattan, a borough of New York City.
 It was the headquarters of "The New York Times" newspaper from 1913 through 2007.
New York Times Building may refer to the following New York City buildings in Times Square:
The New York Times Building, at 41 Park Row in the Civic Center neighborhood of Manhattan, New York City, was the home of "The New York Times" from 1889 to 1903, when it moved to Longacre Square, now known as Times Square.
 The building stands as the oldest of the surviving buildings of what was once "Newspaper Row", and is owned by Pace University.
 A bronze statue of Benjamin Franklin holding a copy of his "Pennsylvania Gazette" stands in front of the building across the street in Printing-House Square, currently known as 1 Pace Plaza.
Cyrus Lazelle Warner Eidlitz (July 27, 1853– October 5, 1921) was an American architect best known for designing One Times Square, the former New York Times Building on Times Square.
 He is founder of the architecture firm presently known as HLW International, one of the oldest architecture firms in the United States.
One Times Square, also known as 1475 Broadway, the New York Times Building, the New York Times Tower, or simply as the Times Tower, is a 25-story, 363 ft skyscraper, designed by Cyrus L. W. Eidlitz, located at 42nd Street and Broadway in New York City.

Question: Which building was completed first, The New York Times Building or The Spiral?
Answer: The New York Times Building