4 World Trade Center (1975–2001)

Cortlandt Street was an express station at Greenwich Street on the demolished IRT Ninth Avenue Line in Manhattan, New York City. It was built as a replacement for the original southern terminus at Dey Street. It had three tracks, one island platform and two side platforms. It was served by trains from the IRT Ninth Avenue Line. It closed on June 11, 1940. The next southbound stop for all trains was Rector Street. The next northbound local stop was Barclay Street. The next northbound express stop was Warren Street. The station was located two blocks from Liberty Street Ferry Terminal and Cortland Street Ferry Depot. These were the main ferry terminals for passengers traveling to Communipaw Terminal and Exchange Place Terminal in Jersey City. The site of the station was in the parcel of land acquired in the early 1970s as the location for the World Trade Center.

5 World Trade Center (also referred to as 130 Liberty Street) is a planned skyscraper at the World Trade Center in Lower Manhattan, New York City. The site is across Liberty Street, to the south of the main 16-acre (6.5 ha) World Trade Center site. In February 2021 it was announced the new 5 World Trade Center will be developed in a joint venture between Silverstein Properties and Brookfield Properties. The proposed building shares its name with the original 5 World Trade Center, which was heavily damaged as a result of the collapse of the North Tower during the September 11 attacks and was later demolished. In June 2007, JPMorgan Chase announced plans to develop the building as the headquarters of its J.P. Morgan Investment Bank. However, JPMorgan Chase's acquisition of Bear Stearns in March 2008 put those plans in doubt, given the company will relocate J.P. Morgan to 383 Madison Avenue. In June 2019, the Port Authority and Lower Manhattan Development Corporation agreed to a joint RFP for the site.As of February 2021, a new design has been announced for the new 5 World Trade Center to be developed by Silverstein Properties and Brookfield Properties. The new design calls for a 1,560,000 square feet (145,000 m2) mixed-use 900-foot-tall (270-meter) tower.

Radio Row is a nickname for an urban street or district specializing in the sale of radio and electronic equipment and parts. Radio Rows arose in many cities with the 1920s rise of broadcasting and declined after the middle of the 20th century.

The WTC Cortlandt station (signed as World Trade Center on walls and historically known as Cortlandt Street and Cortlandt Street–World Trade Center) is a station on the IRT Broadway–Seventh Avenue Line of the New York City Subway in Lower Manhattan. The station is located under the intersection of Greenwich Street and Cortlandt Way within the World Trade Center. It is served by the 1 train at all times. The original Cortlandt Street station was built by the Interborough Rapid Transit Company (IRT) and opened in 1918 as part of the Dual Contracts. The station was renovated in the 1960s when the original World Trade Center was built. Around that time, the portion of Cortlandt Street above the station was demolished to make way for the World Trade Center. The Cortlandt Street station was destroyed on September 11, 2001. Although service on the Broadway–Seventh Avenue Line through the area was restored in 2002, the station's reconstruction was delayed until 2015 because the Port Authority of New York and New Jersey had to first rebuild the World Trade Center PATH station beneath it. After an extensive reconstruction, the Cortlandt Street station reopened on September 8, 2018, as WTC Cortlandt. The station contains connections to the PATH at the World Trade Center station, as well as an out-of-system passageway to the Chambers Street–World Trade Center/Park Place/Cortlandt Street and Fulton Street subway complexes via the World Trade Center Transportation Hub.

The 9/11 Tribute Museum, formerly known as the 9/11 Tribute Center and Tribute WTC, shares the personal stories of family members who lost loved ones, survivors, rescue and recovery workers, volunteers and Lower Manhattan residents with those who want to learn about the September 11 attacks. It is located in the World Trade Center section of Manhattan, New York City and offers walking tours and galleries with 9/11 artifacts and history.

4 World Trade Center (also known by its street address, 150 Greenwich Street) is a skyscraper that is part of the World Trade Center complex in New York City. It is located on the southeast corner of the 16-acre (6.5 ha) World Trade Center site, where the original nine-story 4 World Trade Center stood. Pritzker Prize-winning architect Fumihiko Maki was awarded the contract to design the 978 ft-tall (298 m) building. It houses the headquarters of the Port Authority of New York and New Jersey (PANYNJ).The building's groundbreaking took place in January 2008, and it opened to tenants and the public on November 13, 2013. As of 2016, it is the third tallest skyscraper at the rebuilt World Trade Center, behind One and 3 World Trade Center. However, 2 World Trade Center is expected to surpass the height of both 3 and 4 WTC upon completion. The total floor space of the building includes 1.8 million square feet (167,000 square meters) of office and retail space.

The International Freedom Center (IFC) was a proposed museum to be located adjacent to the site of Ground Zero at the former World Trade Center in New York City, USA. It was selected in 2004 to comprise a "cultural space" near to the memorial for victims of the September 11 attacks, called Reflecting Absence. However, opponents reacted against the IFC's mission, saying that plans to promote international freedom through exhibits and displays about various genocides and crimes against humanity through history, including genocide of Native American and the slave trade in the United States, were inappropriate at a site that many people consider to be sacred. On September 28, 2005, New York Governor George E. Pataki barred the IFC from the World Trade Center site.George Soros, Tom Bernstein, Anthony Romero, and Eric Foner were promoters of the IFC. Within an hour of being barred from the WTC site, the IFC museum declared itself to be out of business, making no effort to find a new location. "We do not believe there is a viable alternative place for the I.F.C. at the World Trade Center site," said the statement from the center's executives, Tom Bernstein, Peter Kunhardt and Richard Tofel. "We consider our work, therefore, to have been brought to an end."

United Airlines Flight 175 was a domestic passenger flight that was hijacked by five al-Qaeda terrorists on September 11, 2001, as part of the September 11 attacks. The flight's scheduled plan was from Logan International Airport, in Boston, Massachusetts, to Los Angeles International Airport, in Los Angeles, California. The Boeing 767-200 aircraft was deliberately crashed into the South Tower of the World Trade Center in New York City, killing all 65 people aboard and an unknown number in the building's impact zone. Approximately thirty minutes into the flight, the hijackers forcibly breached the cockpit and overpowered the captain and first officer, allowing lead hijacker and trained pilot Marwan al-Shehhi to take over the controls, after murdering Captain Victor Saracini from Yardley, Pennsylvania and First Officer Michael Horrocks from Glen Mills, Pennsylvania. Unlike Flight 11, whose transponder was turned off, Flight 175's transponder was visible on New York Center's radar, which depicted the aircraft's deviation from its assigned flight path for four minutes before air traffic controllers took notice at 08:51 EDT. Thereafter, they made several unsuccessful attempts to contact the cockpit. Several passengers and crew members aboard made phone calls to family members and relayed information regarding the hijackers and casualties suffered by passengers and crew. The aircraft crashed into Tower Two (the South Tower) of the World Trade Center at 09:03. The Flight 175 hijacking was coordinated with that of American Airlines Flight 11, which struck the upper floors of Tower One (the North Tower) 17 minutes earlier. The crash of Flight 175 into the South Tower was the only impact televised live around the world. The crash and subsequent fire caused the South Tower to collapse 56 minutes later at 09:59, resulting in hundreds of additional casualties. During the recovery effort at the World Trade Center site, workers uncovered and identified remains from some Flight 175 victims, but many other body fragments could not be identified.

Firehouse, Engine Company 10 and Ladder Company 10, is a New York City Fire Department (FDNY) fire station, located at 124 Liberty Street across from the World Trade Center site and the National September 11 Memorial & Museum in the Financial District neighborhood of Manhattan, New York City. It is known for being the first fire station to respond to the fire at the World Trade Towers on September 11, 2001.

The World Trade Center cross, also known as the Ground Zero cross, is a formation of steel beams found among the debris of the World Trade Center site in Lower Manhattan, New York City, following the September 11 attacks in 2001. This set of beams is so named because it resembles the proportions of a Christian cross. The beams have been part of an exhibit at the National September 11 Museum since 2014.

3 World Trade Center (also known as 175 Greenwich Street) is a skyscraper constructed as part of the rebuilding of the World Trade Center in Lower Manhattan, New York City. The tower is located on the east side of Greenwich Street, on the eastern side of the World Trade Center site. The current 3 World Trade Center is the second building at the site to bear this name. The original building was the Marriott World Trade Center, a hotel located in the southwest corner of the World Trade Center complex. The hotel was a 22-story steel-framed structure with 825 rooms. It had a roof height of 242 feet (74 m). Construction began in 1979 and it opened in July 1981 as the Vista International Hotel. The entire World Trade Center complex was destroyed during the September 11 attacks in 2001. Construction originally began in 2010, but was delayed until 2014 because of a lack of an anchor tenant. The building's concrete core was topped out to maximum height in August 2016, with the perimeter steel structure following on October 6, 2016. The building opened on June 11, 2018. The building was designed by Rogers Stirk Harbour + Partners, and is managed by Silverstein Properties through a ground lease with the Port Authority of New York and New Jersey, the landowner. It is 1,079 ft (329 m) high, with 80 stories. As of 2021, it is the ninth-tallest building in the city.

Westfield World Trade Center is a shopping mall at the World Trade Center complex in Manhattan, New York, that is operated and managed by Unibail-Rodamco-Westfield. The mall opened on August 16, 2016 as the largest shopping complex in Manhattan, with 125 retail spaces. It replaced the Mall at the World Trade Center, the underground shopping mall under the original World Trade Center, which was destroyed on September 11, 2001.