The City Planner Behind 9/11

Mohamed Atta, one of the 9/11 terrorists, pursued a masters degree in city planning before the attacks. Slate's Daniel Brooks reads Atta's masters thesis, and finds a strain of anti-Western modernism that is revealing.

1 minute read

September 9, 2009, 12:00 PM PDT

By Tim Halbur


"The subject of the thesis is a section of Aleppo, Syria's second city. Atta describes decades of meddling by Western urban planners, who rammed highways through the neighborhood's historic urban fabric and replaced many of its once ubiquitous courtyard houses with modernist high-rises. Atta calls for rebuilding the area along traditional lines, all tiny shops and odd-angled cul-de-sacs. The highways and high-rises are to be removed-in the meticulous color-coded maps, they are all slated for demolition. Traditional courtyard homes and market stalls are to be rebuilt."

Thanks to Ariel Ben-Amos

Tuesday, September 8, 2009 in Slate.com

Young Professional

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 and Environmental 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 and Environmental Planner

Get top-rated, practical training for planners

"Planetizen federal action tracker" logo superimposed over black and white image of US Capitol dome.

Planetizen Federal Action Tracker

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

September 23, 2026 - Zachary Whalen

Passengers board an Amtrak train under a cloudy sky.

Amtrak, CN end decades-long dispute with eight-year agreement

The new operating agreement establishes an updated framework for the companies to work together, including processes to resolve disputes.

September 18, 2026 - Mass Transit

An Airo train driving towards the camera on a track. There is a forest behind it.

Northwest rail fans eager for Sept. 30 debut of Amtrak’s Airo fleet

Get ready for that new train smell and more seats. But they won’t go faster or run more frequently on the Cascades route in Washington and Oregon.

September 22, 2026 - Washington State Standard

Two people in hi-vis vests install solar panels on a blue roof.

Trump administration unlawfully slashed $7 billion in clean energy grants, judge rules

The Environmental Protection Agency ended the Solar For All program, which provided the grants, after President Donald Trump’s inauguration.

September 28 - Inside Climate News

The largest wildlife overpass in North America stretching over the I-25. Both sides of the overpass, and the overpass itself, are covered in brown grass.

Record-breaking wildlife overpass in Colorado brings 91% reduction in animal collisions

Prior to the overpass, vehicles were hitting one deer per day on Colorado’s Interstate 25.

September 28 - CBS Colorado

Gov. Gavin Newsom speaks with both hands half-raised. Two American flags, and the flag of California, are behind him.

California lawmakers approve just 5% of much-needed LA28 transportation funding

State legislators appear just as unwilling as Trump to pay for Olympics-related transportation projects.

September 28 - LA Times

FREE Course: Walkable City 1: Why Walkability?

After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.

Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold

The course focuses on the opportunities and imperatives that shape reinvention of mall sites.

Senior Planner

City of Thousand Oaks

Community Development Director

City of Wisconsin Rapids

Professor of Urban Planning

Harvard University Graduate School of Design