Is One World Trade America's Tallest Building? Depends Who You Ask

Spire or antenna; what sits atop One World Trade Center in Lower Manhattan? The answer isn't just semantics, it will determine if the building is indeed taller than Chicago's Willis Tower. A decision by the official arbiter could come next week.

2 minute read

November 9, 2013, 1:00 PM PST

By Jonathan Nettler @nettsj


"There's a question that's looming over the new skyscraper at the World Trade Center site in New York: Should it count as the tallest building in the country?" ask David Schaper and Joel Rose. "The developers say yes. But by some measures, the Willis Tower in Chicago — formerly known as Sears Tower — can still lay claim to the title."

"Now, an obscure organization known as the Council on Tall Buildings and Urban Habitat [CTBUH] is preparing to settle the debate."

"What it really comes down to is this: What are we measuring?" asks Antony Wood, CTBUH's executive director. "If we are measuring man's ability to put materials above the plane of the earth, then it should just be material, irrespective of what that material or function is. Or, are we measuring man's ability to put man above the plane of the earth? Are we going with the highest occupied floor? Or something in between?"

UPDATE (11/12/13): The CTBUH has rendered its judgement and 1 WTC has been named the United States' tallest building. According to Kriston Capps, "The Council, which is housed out of the Illinois Institute of Technology (right there in Chicago!), determined that the spire on 1 WTC was a structural component of the building. The antennae at the top of Willis Tower, on the other hand, were deemed communication components, mere afterthoughts from a structural point of view." 

Friday, November 8, 2013 in NPR

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Cover CM Credits, Earn Certificates, Push Your Career Forward

Aerial view of town of Wailuku in Maui, Hawaii with mountains in background against cloudy sunset sky.

Maui's Vacation Rental Debate Turns Ugly

Verbal attacks, misinformation campaigns and fistfights plague a high-stakes debate to convert thousands of vacation rentals into long-term housing.

July 1, 2025 - Honolulu Civil Beat

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

July 9, 2025 - Diana Ionescu

Map of Haussmann's redesign of Paris in the 1850s through 1870s under Napoleon III.

In Urban Planning, AI Prompting Could be the New Design Thinking

Creativity has long been key to great urban design. What if we see AI as our new creative partner?

June 30, 2025 - Tom Sanchez

View of dense apartment buildings on Seattle waterfront with high-rise buildings in background.

King County Supportive Housing Program Offers Hope for Unhoused Residents

The county is taking a ‘Housing First’ approach that prioritizes getting people into housing, then offering wraparound supportive services.

1 hour ago - Real Change

Aerial view of suburban housing near Las Vegas, Nevada.

Researchers Use AI to Get Clearer Picture of US Housing

Analysts are using artificial intelligence to supercharge their research by allowing them to comb through data faster. Though these AI tools can be error prone, they save time and housing researchers are optimistic about the future.

2 hours ago - Shelterforce Magazine

Green bike share bikes parked in a row on a commercial street with outdoor dining and greenery.

Making Shared Micromobility More Inclusive

Cities and shared mobility system operators can do more to include people with disabilities in planning and operations, per a new report.

3 hours ago - Cities Today

Urban Design for Planners 1: Software Tools

This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.

Planning for Universal Design

Learn the tools for implementing Universal Design in planning regulations.

Home and Land Services Coordinator

Appalachian Highlands Housing Partners

Associate/Senior Planner

Gallatin County Department of Planning & Community Development

Senior Planner

Heyer Gruel & Associates PA