United Airlines Flight 175

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.

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.

4 World Trade Center was a nine-story low-rise office building completed in 1975 that was 118 ft (36 m) tall, and located in the southeast corner of the World Trade Center complex in Lower Manhattan, New York City. The building was designed by Minoru Yamasaki and Emery Roth & Sons. On September 11, 2001, the building was heavily damaged as a result of attacks carried out by the Islamic terrorist group Al-Qaeda, and was later demolished. Its site is now the location of 3 World Trade Center and a new 4 World Trade Center.

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.

Hotel Attraction was a proposal by architect Antoni Gaudí for a skyscraper in Lower Manhattan, New York City.

Construction of New York City's One World Trade Center was deferred until 2006 because of disputes between the Port Authority of New York and New Jersey and the developer. Tishman Realty & Construction is the selected builder. The building reached ground level on May 17, 2008, and was topped out on May 10, 2013. One World Trade Center opened to tenants on November 3, 2014, and One World Observatory opened to the public on May 28, 2015.

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 Sphere (officially Große Kugelkaryatide N.Y., also known as Sphere at Plaza Fountain, WTC Sphere or Koenig Sphere) is a monumental cast bronze sculpture by German artist Fritz Koenig (1924–2017).The world's largest bronze sculpture of modern times stood between the twin towers on the Austin J. Tobin Plaza of the World Trade Center in New York City from 1971 until the September 11, 2001, attacks. The work, weighing more than 20 tons, was the only remaining work of art to be recovered largely intact from the ruins of the collapsed twin towers. After being dismantled and stored near a hangar at John F. Kennedy International Airport, the sculpture was the subject of the 2001 documentary Koenig's Sphere. Since then, the bronze sphere has become a memorial for the attacks. The spherical caryatid was installed in Battery Park between 2002 and 2017, when the Port Authority of New York and New Jersey moved it back close to its original location. Having become a major tourist attraction, the sculpture was rededicated at its permanent location on August 16, 2017, although the sculpture was not restored. The Sphere is installed in Liberty Park, overlooking the September 11 Memorial and its original location.

The St. Nicholas Greek Orthodox Church, officially the St. Nicholas Greek Orthodox Church and National Shrine, is a church and shrine under construction in the World Trade Center in Manhattan, New York City. It is administered by the Greek Orthodox Archdiocese of America and is being developed by the Port Authority of New York and New Jersey, based on the design of Spanish architect Santiago Calatrava. The church is set to be completed in April 2022, coinciding with the Orthodox Holy Week, and will be consecrated July 4, 2022.St. Nicholas will replace the original church of the same name that was destroyed during the September 11 attacks in 2001—the only house of worship, and only building outside the original World Trade Center complex, to be completely destroyed. The new church is located in Liberty Park, overlooking the National September 11 Memorial & Museum. Its architecture draws from Byzantine influences, namely the Church of the Savior and the Hagia Sophia in Istanbul, as well as from the Parthenon in Athens. In addition to serving as a Greek Orthodox parish, St. Nicholas is officially planned as a "House of Prayer for all people" that will function as a national shrine and community center, incorporating a secular bereavement space, social hall, and various educational and interfaith programs.Initially scheduled to open in 2016, St. Nicholas' rebuilding effort was beset by delays, cost overruns, and claims of financial impropriety. In 2019, the nonprofit Friends of St. Nicholas was founded to help complete the project, which continued under the auspices of the newly elected Archbishop Elpidophoros. The church was partially opened for a memorial service commemorating the 20th anniversary of the September 11 attacks.

The collapse of the World Trade Center occurred during the terrorist attacks of September 11, 2001, after the Twin Towers were struck by two hijacked commercial airliners. One World Trade Center (WTC 1, or the North Tower) was hit at 8:46 a.m. Eastern time and collapsed at 10:28 a.m. Two World Trade Center (WTC 2, or the South Tower) was hit at 9:03 a.m. and collapsed at 9:59 a.m. The resulting debris severely damaged or destroyed more than a dozen other adjacent and nearby structures, ultimately leading to the collapse of 7 World Trade Center at 5:21 p.m. A total of 2,763 people were killed in the crashes, fires, and subsequent collapses, including 2,192 civilians, 343 firefighters, and 71 law enforcement officers as well as all the passengers and crew on the airplanes, which included 147 civilians and the 10 hijackers. In September 2005, the National Institute of Standards and Technology (NIST) published the results of its investigation into the collapse. The investigators did not find anything substandard in the design of the twin towers, noting that the severity of the attacks was beyond anything experienced in buildings in the past. They determined the fires to be the main cause of the collapses, finding that sagging floors pulled inward on the perimeter columns, causing them to bow and then to buckle. Once the upper section of the building began to move downwards, a total progressive collapse was unavoidable. The cleanup of the World Trade Center site involved round-the-clock operations and cost hundreds of millions of dollars. Some surrounding structures that were not hit by the airplanes still sustained significant damage, requiring them to be torn down. Demolition of the surrounding damaged buildings continued even as new construction proceeded on the Twin Towers' replacement, the new One World Trade Center, which was opened in November 2014.

The World Trade Center site, often referred to as "Ground Zero" or "the Pile" immediately after the September 11 attacks, is a 14.6-acre (5.9 ha) area in Lower Manhattan in New York City. The site is bounded by Vesey Street to the north, the West Side Highway to the west, Liberty Street to the south, and Church Street to the east. The Port Authority owns the site's land (except for 7 World Trade Center). The original World Trade Center complex stood on the site until it was destroyed in the September 11 attacks. The Port Authority of New York and New Jersey (PANYNJ), Silverstein Properties, and the Lower Manhattan Development Corporation (LMDC) have overseen the reconstruction of the site as part of the new World Trade Center, following a master plan by Studio Daniel Libeskind. Developer Larry Silverstein holds the lease to retail and office space in four of the site's buildings.

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.