Question: Which was built first, 55 Hudson Yards or New York World Building?

Context articles: New York World Building
Hudson Park and Boulevard
50 Hudson Yards
Vessel (structure)
1939 New York World's Fair
55 Hudson Yards
Queens Museum
34th Street (IRT Ninth Avenue Line)
Hudson Yards, Manhattan
500 West 30th Street

"The New York World" Building was a skyscraper in New York City designed by early skyscraper specialist George Browne Post and built in 1890 to house the now-defunct newspaper, "The New York World".
 It was razed in 1955.
Hudson Park and Boulevard is a greenway and boulevard in Hell's Kitchen, Manhattan in New York City, being built as part of the Hudson Yards Redevelopment Project.
 It lies between 10th and 11th Avenues.
 When complete, it will be 4 acre , six-block-long north-south, and run between 33rd and 39th Streets.
 The boulevard will be in the center of the park when complete.
 Construction will be in two phases; the first phase, located between 33rd and 36th Streets, was under construction from 2012 to August 2015.
 The second phase has no timeline.
 The total cost of the project is more than $30 million.
50 Hudson Yards is a building being planned as part of the Hudson Yards Redevelopment Project in Hell's Kitchen, Manhattan.
 The planned building is to be located to the north of 30 Hudson Yards, and on the east side of the Hudson Park and Boulevard, adjacent to 55 Hudson Yards.
 It will total 2.9 million square feet of commercial space.
 At the SW corner of 34th Street and 10th Avenue, it will replace the drive-thru McDonald's that had long-occupied the space.
Vessel is a public structure and landmark that is under construction as part of the Hudson Yards redevelopment project in the Manhattan borough of New York City.
 The elaborate honeycomb-like structure is designed to rise 16 stories and consist of 154 flights of stairs, 2,500 steps, and 80 landings.
 When complete, visitors would be able to climb the installation.
 Designed by the British architect Thomas Heatherwick, "Vessel" is intended to be the main feature of the 5 acre Hudson Yards Public Square once the structure is completed in 2018 at a cost of $150 million to $200 million.
The 1939–40 New York World's Fair, which covered the 1216 acre of Flushing Meadows-Corona Park (also the location of the 1964–1965 New York World's Fair), was the second most expansive American world's fair of all time, exceeded only by St. Louis's Louisiana Purchase Exposition of 1904.
 Many countries around the world participated in it, and over 44 million people attended its exhibits in two seasons.
 The NYWF of 1939–1940 was the first exposition to be based on the future, with an opening slogan of "Dawn of a New Day", and it allowed all visitors to take a look at "the world of tomorrow".
 According to the official New York World's Fair pamphlet:
55 Hudson Yards (also known as One Hudson Yards or One Hudson Boulevard) is a future tower just outside the Hudson Yards Redevelopment Project.
 Located in Chelsea, Manhattan, it will add a combined 4000000 sqft of space to the Hudson Yards project, along with 50 Hudson Yards, even though the two buildings will be located outside of the redevelopment site itself.
The Queens Museum, formerly the Queens Museum of Art, is an art museum and educational center located in Flushing Meadows-Corona Park in the borough of Queens in New York City, United States.
 The museum is housed in the New York City Building, which was built for the 1939 New York World's Fair, and which then hosted the United Nations General Assembly from 1946 to 1950.
 The museum itself was founded in 1972, and has among its permanent exhibitions, the "Panorama of the City of New York", a room-sized scale model of the five boroughs originally built for the 1964 New York World's Fair, and repeatedly updated since then.
 It also has a large archive of artifacts from both World's Fairs, a selection of which is on display.
34th Street was an express station on the demolished IRT Ninth Avenue Line, New York, United States.
 It was originally built on July 30, 1873 by the New York Elevated Railroad Company, and had two levels.
 The lower level was built first and had two tracks and two side platforms.
 The upper level was built as part of the Dual Contracts and had one track and two side platforms over the lower level local tracks.
 It closed on June 11, 1940.
 The next southbound local stop was 30th Street.
 The next southbound express stop was 14th Street.
 The next northbound local stop was 42nd Street.
 The next northbound express stop was 66th Street.
 This station also serviced Penn Station and was west of the IRT and IND subway stations at Penn Station.
Hudson Yards is a large-scale redevelopment program that is planned, funded and constructed under a set of agreements among the City of New York, the State of New York, and the Metropolitan Transportation Authority, with the aim of expanding the Midtown Manhattan Business District westward to the Hudson River.
 The program includes a major rezoning of the Far West Side, an extension of the New York City Subway's trains to a new subway station at 34th Street and 11th Avenue, a renovation and expansion of the Jacob K. Javits Convention Center, and a financing plan to fund the various components.
500 West 30th Street (also known as Abington House) is a residential building in Chelsea, in Manhattan, New York City just outside the Hudson Yards Redevelopment Project.
 There are 386 rental apartments at the building, located at the southwest corner of 30th Street and Tenth Avenue.
 Robert A.M. Stern Architects designed the building, and The Related Companies developed the building.
 There is about 7200 ft2 of rental space on the ground floor of the 33-story, 325 ft -tall building; the building also has a pre-fabricated red brick facade.
 The building, the first to open in the area under the zoning of the Hudson Yards Redevelopment Project, has 78 permanent units.
 It started leasing in April 2014, just two years after beginning construction in 2012.