Question: Milton Elting Hebald is an artist whose has 23 of his works displayed in public in New York City and at the Port Authority of New York and New Jersey, which is headquartered at what building?

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Milton Hebald: Milton Elting Hebald (May 24, 1917 – January 5, 2015) was a sculptor who specialized in figurative bronze works.  Twenty-three of his works are displayed in public in New York City, including the statues of Romeo and Juliet and The Tempest in front of the Delacorte Theatre in Central Park.  His major work is a 220 ft , 12-piece "Zodiac Screen", then the largest sculpture in the world, commissioned by Pan-American Airlines for its terminal at John F. Kennedy International Airport, and now owned and stored by the Port Authority of New York and New Jersey.

Construction of the World Trade Center: The construction of New York City's first World Trade Center complex was conceived as an urban renewal project, spearheaded by David Rockefeller, to help revitalize Lower Manhattan.  The project was developed by the Port Authority of New York and New Jersey, which hired architect Minoru Yamasaki who came up with the specific idea for twin towers.  After extensive negotiations, the New Jersey and New York state governments, which oversee the Port Authority, agreed to support the World Trade Center project, which was built at the site of Radio Row in the Lower West Side of Manhattan, New York City.  To make the agreement acceptable to New Jersey, the Port Authority agreed to take over the bankrupt Hudson & Manhattan Railroad, which brought commuters from New Jersey to the Lower Manhattan site and, upon the Port Authority's takeover of the railroad, was renamed PATH.

Kenneth Lipper: Kenneth Lipper is a prominent figure in the arts, the world of finance, and government.  He served as New York City’s Deputy Mayor under Mayor Ed Koch.  Mr. Lipper was a General Partner at Lehman Brothers and Salomon Brothers, serving as the investment banker for some of the leading public corporations in the United States and Europe.  He was Adjunct Professor at Columbia School of International Affairs in the field of international economics.  Mr. Lipper serves as a director of corporations and government agencies.  He is Chairman of Lipper & Co, an investment bank and investment management company, and also serves as Chairman of the Board of Lippmann Enterprises LLC, a cosmetics company.  In November 2010, after winning a civil class action, Lipper was awarded more than $15 million in indemnification, because as a New York State Supreme Court judge’s findings noted, "none of the investigations and claims asserted against [Lipper] had resulted in a finding that he had engaged in 'negligence, malfeasance or a violation of applicable law.'"  In 2013, Governor Andrew Cuomo nominated, and the New York State Senate confirmed, Kenneth Lipper as a member of the Board of Commissioners of the Port Authority of New York and New Jersey, the Port Authority’s governing body.  The Port Authority is a congressionally created bi-state agency which owns and operates JFK International, LaGuardia, and Newark International airports, the bridges and tunnels, PATH railroad, ports and terminals and the World Trade Center.  Mr. Lipper won an Academy Award in 1998 for producing the best feature-length documentary.  He is author of the novels Wall Street and City Hall and wrote the original screenplay for the feature film "City Hall."  Mr. Lipper was Producer of the feature films: "City Hall", "The Winter Guest" and "The Last Days," as well as Chief Technical Adviser of "Wall Street."  He is the co-founder and co-publisher of Lipper Viking Penguin, a celebrated biography series which has published 24 books in multiple languages and countries.

PATH (rail system): Port Authority Trans-Hudson, abbreviated PATH, is a rapid transit system serving Newark, Harrison, Hoboken, and Jersey City in metropolitan northern New Jersey, as well as lower and midtown Manhattan in New York City.  The PATH is operated by, and named after, the Port Authority of New York and New Jersey.  PATH trains run 24 hours a day and 7 days a week.

Port Authority of New York and New Jersey: The Port Authority of New York and New Jersey (PANYNJ) is a joint venture between the U.S. states of New York and New Jersey, established in 1921 through an interstate compact authorized by the United States Congress.  The Port Authority oversees much of the regional transportation infrastructure, including bridges, tunnels, airports, and seaports, within the geographical jurisdiction of the Port of New York and New Jersey.  This 1,500 mi2 port district is generally encompassed within a 25 mi radius of the Statue of Liberty National Monument.  The Port Authority is headquartered at 4 World Trade Center and is a member of the Real Estate Board of New York.

Port Authority Bus Terminal: The Port Authority Bus Terminal (PABT) is the main gateway for interstate buses into Manhattan in New York City.  It is owned and operated by the Port Authority of New York and New Jersey (PANYNJ).  Colloquially called the Port Authority, the bus terminal is located in Midtown at 625 Eighth Avenue between 40th Street and 42nd Street, one block east of the Lincoln Tunnel and one block west of Times Square.  The PABT, opened in 1950 between 8th and 9th Avenues and 40th and 41st Streets, was built to consolidate the many different private terminals spread across Midtown Manhattan.  A second wing extending to 42nd Street was added in 1979.  It is one of three bus terminals operated by the PANYNJ, the others being the George Washington Bridge Bus Station in Upper Manhattan and the Journal Square Transportation Center in Jersey City.

New Jersey Route 495: Route 495 is a 3.45 mi freeway in Hudson County, New Jersey, in the United States that connects the New Jersey Turnpike (Interstate 95, I-95) at exits 16E and 17 in Secaucus to New York State Route 495 (NY 495) inside the Lincoln Tunnel in Weehawken, providing access to Midtown Manhattan.  The road is owned and operated by the New Jersey Turnpike Authority (NJTA) between the New Jersey Turnpike and Route 3, the New Jersey Department of Transportation (NJDOT) between Route 3 and Park Avenue near the Union City–Weehawken border, and by the Port Authority of New York and New Jersey (PANYNJ) east of Park Avenue, including the helix used to descend the New Jersey Palisades to reach the entrance of the Lincoln Tunnel.  Route 495 is mostly a six-lane freeway with a reversible bus lane used during the morning rush hour.  The bus lane, which runs the entire length of the freeway, continues into the Lincoln Tunnel's center tube.

NY Waterway: NY Waterway, or New York Waterway, is a private transportation company running ferry and bus service in the Port of New York and New Jersey and in the Hudson Valley.  While operations and much marketing come under the NY Waterway logo, the company works with other private companies and in public-private partnership with agencies such as the Port Authority of New York and New Jersey, New Jersey Transit, New York City Department of Transportation, and Metropolitan Transportation Authority, to provide service and maintain docking facilities.

William Ronan: William John Ronan (November 8, 1912 – October 15, 2014) was an American public servant and academic who founded and served as the first chairman of New York City's Metropolitan Transportation Authority, from 1968 to 1974.  He subsequently served as chairman of the Port Authority of New York and New Jersey from 1974 until 1977 and remained on the board of the Port Authority until 1990.  Prior to entering state government as a key aide to Governor Nelson Rockefeller of New York in 1958, he was a professor of government at New York University and served as dean of NYU's graduate school of public service from 1953 to 1958.

Port Newark–Elizabeth Marine Terminal: Port Newark–Elizabeth Marine Terminal, a major component of the Port of New York and New Jersey, is the principal container ship facility for goods entering and leaving New York metropolitan area and the northeastern quadrant of North America.  Located on Newark Bay, the facility is run by the Port Authority of New York and New Jersey.  Its two components—Port Newark and the Elizabeth Marine Terminal (sometimes called "Port Newark" and "Port Elizabeth")—sit side by side within the cities of Newark and Elizabeth, New Jersey, just east of the New Jersey Turnpike and Newark Airport.

Supporting paragraphs: Milton Hebald Port Authority of New York and New Jersey
Answer: World Trade Center