A newly released time-lapse video traces the construction of One World Trade Center from the ashes of Ground Zero, showing the skyscraper rise on the exact footprint of the original Twin Towers. The tower's cornerstone was laid on July 4, 2004, though construction stalled and did not truly begin until 2006, before the building finally opened its doors on November 3, 2014.
The footage compiled for the anniversary comes from a much larger archive. As reported by Local Memphis, One World Trade Center now stands as the tallest building in the Western Hemisphere and the third-tallest in the world, reaching 1,368 feet from base to parapet — the same height as the original Twin Towers — before its crowning mast pushes the total to a symbolic 1,776 feet. This September, webcam network EarthCam released its own 25th-anniversary time-lapse film and short documentary, titled “We Never Left,” compiled from over 14.7 million images taken minute-by-minute at Ground Zero since September 2001, according to GlobeNewswire. EarthCam installed its first camera at the site just days after the attacks to aid recovery operations and kept its lens trained there for the full quarter-century since.
An Engineering Answer to the Original Towers
The new tower's footprint measures 200 square feet, matching the dimensions of the original Twin Towers, but the engineering underneath is fundamentally different. Where the original towers were supported by external steel columns, One World Trade Center relies on a hybrid concrete and steel structure built around a reinforced concrete core wall system at the center of the tower, per the same report from Local Memphis. That core wall system provides support for gravitational loads while resisting wind and seismic forces, a design detailed by structural engineer Ahmad Rahimian, with WSP serving as the structural engineering firm behind the project. The Wall Street Journal has reported the total project cost at roughly $3.8 billion.
The tower's official 1,776-foot height carries its own bureaucratic backstory. In November 2013, the Council on Tall Buildings and Urban Habitat officially ruled that the 408-foot mast atop the building is a permanent architectural spire rather than a functional antenna, according to CTBUH. Without that spire, the roofline stands at 1,368 feet, precisely matching the height of the original North Tower. Dubai's Burj Khalifa remains the world's tallest building.
A Blast-Resistant Base Hidden in Plain Sight
Security considerations shaped the tower's lower floors as much as any engineering formula. One World Trade Center rises from a 185-foot-tall windowless concrete base engineered to withstand ground-level vehicle bomb blasts, clad in more than 2,000 glass fins, according to Studio Matrx. Initial plans called for decorative prismatic glass on that base, but the material was scrapped after tests showed it shattered into dangerous shards. That counterterrorism-driven design has been reinforced by a permanent government presence nearby: in April 2025, New York City opened a dedicated 26,000-square-foot NYPD World Trade Center Command facility at 27 Cliff Street to house 126 counterterrorism personnel securing the 16-acre campus, a facility Hoodline covered in its earlier reporting on the new NYPD command post.
The architect behind the tower's silhouette did not live to see this anniversary. David M. Childs, the lead architect from Skidmore, Owings & Merrill who designed One World Trade Center, died at age 83 in late March 2025, according to The Washington Post. Childs famously sketched his initial conceptual design for the building on a paper napkin during a lunch with his son shortly after the 2001 attacks, a detail the paper describes as adding poignant biographical weight to the skyscraper he ultimately built.
From Symbol to Working Skyline Fixture
One World Trade Center's evolution from symbol to commercial asset has played out largely through leasing deals. In July 2010, the Port Authority of New York and New Jersey formed a joint venture with The Durst Organization, which invested $100 million for an equity stake and took over property management, leasing, and tenant fit-outs, according to Site Selection Magazine. The Port Authority retains underlying land ownership while Durst handles day-to-day commercial operations. Media company Condé Nast served as the anchor tenant that catalyzed broader commercial interest, signing a 25-year, $1.9 billion lease in 2011 to occupy more than 1 million square feet across 21 floors — at the time, the largest office lease in Lower Manhattan in over 25 years.
That commercial momentum has continued in recent months. Hoodline has previously reported on Ameriprise renewing its 78th-floor lease and on an energy investor gobbling up 70,000 square feet as the tower approached roughly 97% occupancy, alongside coverage of the surrounding campus's growing dining scene and ongoing questions over the stalled 5 World Trade Center housing tower.
A Tourist Attraction With Built-In History
The building's public face opened years after its office floors filled in. The three-level One World Observatory, spanning floors 100 to 102, opened to the public on May 29, 2015, featuring SkyPod elevators that carry visitors 1,250 feet above Manhattan in under 60 seconds, per CBS News, which described the elevators at launch as among the fastest in the world. Inside those elevators, digital time-lapse screens play a 47-second animation of Manhattan's 500-year skyline history, including a brief four-second glimpse of the original Twin Towers before they fade away ahead of 2001, according to SlashGear. Operators told the outlet that omitting the Twin Towers entirely would have been disrespectful to history.
Taken together, the tower functions today as both a working office building and the main structure of the World Trade Center complex rebuilt after 9/11, standing on the former World Trade Center site in New York. Twenty-five years after the attacks that leveled the original towers, the new time-lapse footage offers a compressed record of everything that has replaced them — steel, glass, concrete, leases, security posts, and an observation deck built atop a site that spent years as a wound in the skyline.
