The World Trade Center (WTC) was a complex of seven buildings in Lower Manhattan in New York City that were destroyed in the September 11, 2001, terrorist attacks. The site is currently being rebuilt with six new skyscrapers and a memorial to the casualties of the attacks.

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The North Tower (also known as Tower 1, Building One or 1 WTC) of the World Trade Center in New York City was completed and opened in 1972 at a height of 417 m (1,368 ft), distinguishable from the South Tower (2 World Trade Center) by the 360-foot-tall telecommunications antenna or mast on its roof. The address of this building was 1 World Trade Center with its own ZIP code of 10048. It was destroyed along with the South Tower in the September 11 attacks. The North Tower was the first tower to be struck at 8:46 AM and the second tower to collapse at 10:28 AM. No one in the 92nd floor or above survived the attack. The North Tower was the tallest building in the world for two years until it's height was surpassed by the Sears Tower which was built in Chicago.

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The South Tower (also known as Tower 2, Building Two or 2 WTC) of the World Trade Center in New York City was completed and opened in 1973 at a height of 415 meters (1,362 ft), distinguishable from the North Tower by its outdoor observation deck and the absence of a television antenna. The address of this building was 2 World Trade Center with its own ZIP code of 10048. It was destroyed along with the North Tower (1 World Trade Center) in the September 11 attacks. The South Tower was the second tower to be struck at 9:03 AM and the first tower to collapse at 9:59 AM.

On the 107th floor of this building was a popular tourist attraction called Top of the World Trade Center Observatories. On the roof was an observation deck accessible to the public and a disused helipad at the center.

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The Woolworth Building, at 57 stories, is one of the oldest—and one of the most famous—skyscrapers in New York City. More than 95 years after its construction, it is still one of the fifty tallest buildings in the United States as well as one of the twenty tallest buildings in New York City. The building is a National Historic Landmark, having been listed in 1966.

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Two World Financial Center is one of the largest skyscrapers in New York City, located at 225 Liberty Street in the Financial District of the New York City borough of Manhattan. Rising 645 feet (197 m), the building is the second tallest of the four buildings in the World Financial Center complex that stands in southwest Manhattan. It is similar in design to Three World Financial Center, except that its roof is dome-shaped rather than 3 WFC's solid pyramid design.

Two World Financial Center was severely damaged by the falling debris when the World Trade Center towers collapsed due to the September 11 attacks. The building had to be closed for repairs from September 11, 2001 until May 2002 as a result of damage sustained in the terrorist attacks. Though the building has an address on Liberty Street, its most prominent facade is on West Street between Liberty and Vesey Streets.

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One World Financial Center is a skyscraper in Lower Manhattan, New York City. It is located at 200 Liberty Street between South End Avenue and West Street. It was built in 1985 as part of the World Financial Center complex. It is a 40 story building reaching the height of 577 ft (176 m). It has a leasable area of 1,628,000 ft² (151,000 m²). Similarly to other WFC buildings it has a unique roof which is a flat-top pyramid. It is connected to the rest of the WFC complex by a skybridge over Liberty Street.

The building is located across the street from the World Trade Center site and was significantly damaged in the September 11th attacks. The initial dust cloud and other explosions shattered many windows, majorly damaging nearby Winter Garden Atrium and other buildings of the WFC. It was closed for several months and reopened after restoration.

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