One World Trade Center Explained

Ashly Chole Senior Finance Researcher

Last Updated 13 July 2025

The World Trade Center, a towering structure with over 100 stories and a height of over 1800 feet, was constructed using an impressive amount of materials, including 7,000 tons of steel, glass, 2.6 million bricks, and slabs of granite for its foundations on bedrock. The total cost of building the World Trade Center amounted to approximately $3.9 billion, a substantial sum that couldn't be financed through conventional means such as loans or bonds due to additional expenses incurred for site preparation at Ground Zero and unexpected cost overruns caused by factors like adverse weather conditions or unforeseen structural issues with certain components that were not tested before installation.

Once the tallest structure in the world, the World Trade Center now stands as the tallest skyscraper in New York City, serving as a replacement for the original Twin Towers that were demolished following the tragic 9/11 attacks in 2001. However, the construction of the new World Trade Center was not without challenges, as it faced five years of financial overruns and construction delays. Eventually, after overcoming these obstacles, the World Trade Center opened its doors to the public. Interestingly, the project's original developers had to file for bankruptcy twice during its construction.

It has more than 100 floors

One World Trade Center, standing approximately 200 feet taller than any other structure, is a remarkable feat of architecture. Its composition includes steel and glass, with the foundation constructed on bedrock using 7,000 tons of steel, glass, 2.6 million bricks, and granite slabs. The total cost of building One World Trade Center was approximately $3.9 billion, and it was financed through contributions from private individuals rather than tax dollars or government funding. This unique approach allowed individuals who wanted to contribute to their city's skyline to play a crucial role in the construction of this iconic skyscraper instead of relying solely on taxpayers. One World Trade Center covers an existing property previously used by a prominent real estate corporation with offices in New York City and Toronto, Canada. Interestingly, the same architect who designed the original World Trade Center buildings (WTC 1 and WTC 2) also designed One World Trade Center, although WTC 3 was not constructed at that time and is not widely considered one of his masterpieces by many architects around the world, including myself.

The tallest structure in New York

One of the most iconic landmarks in New York City, One World Trade Center, is a must-see when visiting the city, alongside the Empire State Building. It is one of only two structures that can be seen from every borough in the city, making it a truly remarkable sight. The construction of One World Trade Center faced various delays, initially due to financial concerns and later due to increased demand for high-tech office space and residential development potential following the events of 9/11. As a result, many businesses with offices in WTC 1 opted to relocate to other areas such as Jersey City or Brooklyn, where land prices were more affordable compared to prime real estate in Manhattan near Times Square, which was home to many major brands at that time. However, the landscape changed significantly over time with the influx of technology companies expanding into New York City from outside sources, transforming the dynamics of the real estate market.

One World Trade Center performs several tasks

One World Trade Center serves multiple functions, primarily as a state-of-the-art Class A office space that caters to numerous tenants. With over 3 million square feet of rentable office space, it provides a modern and dynamic environment for companies and organizations. As a vital component of the larger World Trade Center complex, One World Trade Center is part of a comprehensive ecosystem that includes the 9/11 Memorial & Museum, the World Trade Center Transportation Hub, the World Trade Center Performing Arts Center, and other offices and retail buildings. This cohesive complex serves as a hub for trade, culture, transit, and business, playing a significant role in the vibrant landscape of New York City.

The One World Observatory is the designated name for the observation deck located on the upper floors of the One World Trade Center. From this elevated vantage point, visitors can take in unparalleled panoramic views of the iconic New York City skyline and its surroundings. One World Trade Center holds significant commemorative and symbolic significance, paying tribute to the victims of September 11 while also symbolizing resilience and rebirth. The design of the skyscraper incorporates various iconic motifs, including the 'podium,' 'tower,' and 'spire,' serving as a powerful reminder of the strength and determination of both New York City and the United States.

One World Trade Center incorporates

One World Trade Center incorporates several innovative energy-saving features, including high-performance glass, efficient heating, ventilation, and air conditioning systems, and an on-site cogeneration plant for power generation, all aimed at promoting ecological sustainability. The construction of the building also incorporates state-of-the-art technology elements, such as advanced security systems, cutting-edge communications infrastructure, and high-speed elevators. As an economic driver, One World Trade Center contributes to the local economy by generating employment opportunities, attracting tourism, and fostering business activity. The construction and ongoing operation of the building create jobs in various sectors, including management, maintenance, and construction, while also stimulating economic growth in Lower Manhattan and the broader New York City region.

One World Trade Center features a range of community and public spaces, including the iconic 9/11 Memorial Plaza, which comprises two reflecting ponds designed in the shape of the original Twin Towers, serving as a poignant tribute to the victims of the September 11 attacks. In addition, the building and the surrounding World Trade Center complex serve as a vibrant hub for community events, cultural activities, and open programming, creating a sense of togetherness and vitality in the area. These spaces provide opportunities for public engagement, foster a sense of community, and serve as a place for remembrance, reflection, and shared experiences.