Office buildings completed in 1973

The original World Trade Center (WTC) was a complex of seven buildings in the Financial District of Lower Manhattan in New York City. Built primarily between 1966 and 1975, it was dedicated on April 4, 1973, and was destroyed on September 11, 2001 after two hijacked planes were flown into the towers in a coordinated terrorist attack. The complex included the 110-story-tall Twin Towers, at the time of their completion the tallest buildings in the world, with the original 1 World Trade Center at 1,368 feet (417 m), and 2 World Trade Center at 1,362 feet (415.1 m); they were also the tallest twin skyscrapers in the world until 1996, when the Petronas Towers opened in Kuala Lumpur, Malaysia. The other buildings in the complex were the Marriott World Trade Center (3 WTC), 4 WTC, 5 WTC, 6 WTC, and 7 WTC. The complex contained 13,400,000 square feet (1,240,000 m2) of office space and, prior to its completion, was projected to accommodate an estimated 130,000 people.

skyscraper in Chicago, Illinois

skyscraper in the Chicago Loop, Chicago, Illinois, United States

skyscraper in Lower Manhattan, New York City, USA

skyscraper in Johannesburg, South Africa

skyscraper in Los Angeles, California, USA

former building in New York City

Residential skyscraper in Puteaux, France

former skyscraper in New York City

Skyscraper in Minneapolis

building in Hong Kong, China

Office skyscraper in Manhattan, New York

television studio in Jinnan, Tokyo, Japan

skyscraper in Milwaukee, Wisconsin, United States

north tower of the former New York World Trade Center, destroyed in 2001

skyscraper in Midtown Manhattan, New York City

skyscraper in Baltimore, Maryland, United States

former South Tower of the World Trade Center (twin towers) in New York City

office skyscraper in La Défense in the commune of Puteaux west of Paris, France

building in New York City

building in South Africa

skyscraper in San Francisco

office skyscraper in San Fransisco, California, USA

skyscraper in Rochester, New York

thumb|250px|Sähkötalo Sähkötalo (lit. Electricity Building) () is the name of the building located in the Kamppi district of central Helsinki, which serves as the headquarters of HELEN, the municipal energy company of the city of Helsinki.

skyscraper in Downtown Houston, TX, US

building in South Africa

building in Abidjan, Ivory Coast

national historical monument of Venezuela in Caracas

Mixed-use skyscraper in Vancouver, British Columbia

high-rise building in Providence, Rhode Island, United States

building in Quebec, Canada