Finding Biology in London Postcards!

by Pietra Leao

On a recent trip to London, I came across a corner shop offering a tempting deal: £2 for any 10 postcards of the city!

So I quickly picked out ten. But, as I stood at the register, I realized that my selection was not random. I paused, wondering why none of the postcards showed close-ups of The Shard – one of London’s newer skyscrapers. I realized these souvenirs were quietly, and successfully, appealing to my biology. Without knowing it, I had responded to deep-rooted preferences shaped by our evolution. Here’s what I noticed:

1.Traditional Architecture At the shop I found endless postcards of the famous clock tower, Big Ben (c. 1859) but none focused on the infamous all-glass Shard (c. 2012). 

Biometric studies today show that most modern buildings do not engage us like traditional ones. One reason for this is because traditional architecture uses lots of symmetry, hierarchy, and fine detail that appeal to the eye. Just as nature is rich in detail, humans unknowingly replicated this non-conscious preference in traditional buildings worldwide, – up until the modern movement, where architecture becomes minimalist and glass-heavy, (like The Shard). 

On the left, is a photo I took of The Shard; no surprise, I found no postcards focused on this building; evidently people prefer to look at and purchase a postcard of Big Ben.

2. Use of Red Another common feature of the postcards was the repeated use of red. Red is one of the most biologically powerful colors humans perceive. In primitive times it was crucial for our brains to quickly recognize red, as it could signal danger – like a lion’s mouth! 

Today red continues to attract our attention and is used universally for stop signs, emergency signals, breaking news banners, and ads everywhere.

3. People and Faces Another important evolutionary trait we share with early humans is finding and always looking for other people. Faces are among the fastest things that our brain can process and recognize, within fractions of a second. 

No surprise, then, faces and people are everywhere in logos, billboards and the London postcards.

As an architecture student, I wondered how architects might use these techniques to get people to pay more attention to buildings so that we might mindfully experience the urban environment.

Here’s the ten postcards, I picked up without realizing it, take a look:

Click on image to enlarge

And, note that the only postcard featuring The Shard also shows London Bridge, another iconic traditional London landmark, in front of it, during a sunset where the River Thames is almost red!

Further London postcard analysis is here:

Pietra Leao is a BArch student at the Boston Architectural College (BAC)

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Talk on Thigmotaxis – the Human ‘Wall-Hugging’ trait: Tuesday, March 10th, 2026

Interested in understanding our behavior in the built environment? If you missed the talk, no worries; it’s also available online here:

The topic is Thigmotaxis, discussing how humans are natural ‘Wall-Huggers’ – hardwired to seek out edge-conditions for safety + orientation without conscious awareness or control!

Designers who get this improve design outcomes everywhere; those who don’t – disappoint us all!

This course is AIA certified for 0.5 Learning Units (HSW LUs):

?s, email: contact(at)theHapi.org

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Now On YouTube: Why Your Eyes Ignore Modern Buildings !

Research by the Human Architecture + Planning Institute (theHapi.org) is featured in this latest video by the Aesthetic City – check it out;

It reveals how our biology impacts our design experience more than most realize, and how recognizing that will help us build healthy and happier places for us all!

Biometric tools create heatmaps which glow brightest where people look most, when taking in any scene – fading to black in areas ignored, revealing how detail, organized complexity draw the eye, and blankness, repetitive parallel lines do not.

Interested in learning more? Check out theHapi.org’s online courses here:

https://thehapi.thinkific.com

More information on the course content, which is AIA-certified for architects seeking Learning Units (LUs), is here:

?s, reach out to: contact(at)theHapi.org

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How do People Respond to Nature in the Suburbs? This Biometric Study has closed and is out for analysis;

How do people visually experience ‘pocket forests‘?

Tufts University’s Urban Attitudes Lab is currently analyzing a short online eye-tracking study comparing visual responses to pocket forests in built environments; results should be out soon.

More info: http://sites.tufts.edu/forests

?s, email: pocket.forest.devens@gmail.com

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This Eye-Tracking pilot-study is now out for analysis;

Building Study #11 – we hope to have results out soon!

These studies, sponsored by theHapi.org, look at how humans really look at buildings, using state-of-the-art eye-tracking and facial-expression-analysis software from iMotions.com, a global purveyor of biometric tools for human behavioral research. Once on site, each study directs you to eye-tracking calibration slides – where you simply focus on a shape as it moves across the screen – before the study begins; each one takes about 4 minutes to complete.

?s: reach out to contact(at)theHapi.org

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Aiming for a Happy Year? Pick up the HAPI-Course Bundled!

Just in time for the Holidays, we’re again offering a package deal on the HAPI Certification course, all 7-classes bundled for $99!

What is it? Seven half-hour presentations bridging the arts + sciences, revealing how biology and psychology shape our experience of the built environment – inside + out, far more than most realize.  All online.

AIA-certified for 3.5 Learning Units (LUs)*, this is the perfect gift for architects, planners, and designers of all stripes, both students and professionals, who are keen to better understand the science behind human design experience – and apply it.

They’ll become familiar with new tools to assess design – including eye tracking, which follows our conscious and non-conscious eye movements, capturing how we take in any scene; (click on image below).

More HAPI Certification Course information is here. Have additional ?s, email: contact(at)theHapi.org

  • * combined theHAPI courses provide 3 LU|HSWs credits plus 0.5 LU credit

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theHapi.org is a nonprofit, 501c3, whose mission is to understand the human experience of the built environment and improve its design through education + research.

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International Book Launch for the Handbook of Neuroscience and the Built Environment happened – Friday, November 21, 11 AM ET, 17:00 CET

The online Book Launch for theRoutledge International Handbook of Neuroscience and the Built Environment just took place!

A YouTube recording of the 1-hour event is here: https://www.youtube.com/watch?v=-EwQkmb82KE

This session, moderated by Michael Mehaffy, includes brief talks by contributing authors of 15 of the book’s 31 Chapters, see list below, and a Welcome by its co-editors, Alexandros Lavdas + Ann Sussman.

Participants heard about our transformative time, how new understandings in the life sciences are game-changing for architecture and urban design, for understanding what people need to see and be in to be at their best.

Here’s the draft list of remarkable speakers, who briefly talked about their Handbook chapters:

For more information about the Handbook, check out this earlier post: https://geneticsofdesign.com/2025/10/01/this-just-in-the-handbook-of-neuroscience-and-the-built-environment-is-out/

?s: feel free to reach out at: contact(at)theHapi.org

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This Just In – The Handbook of Neuroscience and the Built Environment is Out!

We’re thrilled to announce the publication of the Handbook of Neuroscience and the Built Environment this month:

Edited by Board Members of theHapi.org, the Handbook reflects our game-changing times in the 21st-century, where new understandings in the life sciences, prove transformative for design fields, including architecture, planning and interior design, helping us appreciate what people need to see and be in to be at their best!

Compiling 31 Chapters by 51 authors on four continents, the Handbook provides a new foundation for architects, academics and the public at large to understand the human experience of place, revealing how our experience begins subliminally and reflects our evolution.

With Introductions by Susan Magsamen of the International Arts + Mind Lab and Micheal Mehaffy, of the Sustasis Foundation, the Handbook presents six sections, with chapters delving into human perception, our need for social connection, discussions of how color, shape and form impact our behavior, as well as how biometric tools, including eye-tracking and AI tools, provide a new lens to ‘see’ both architecture and ourselves.

The e-book version of the Handbook, with most affordable subscriptions, (starting at $38), is here:

Feel free to share the flyer. For the free PDF of the Handbook’s first 80-pages, including the Table of Contents, Introduction and first three Chapters, click on the PREVIEW BOOK button in the link below:

https://www.routledge.com/Routledge-Handbook-of-Neuroscience-and-the-Built-Environment/Lavdas-Sussman-Woodworth/p/book/9781032744216

And, if you have ideas for future research or other ?s; do reach out to us at Contact(at)theHapi.org

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How do People take in Buildings? Take part in these brief Eye-Tracking Studies to help us find out!

Anyone with a laptop or PC with webcam, can participate; on a Mac, link to them from Google Chrome or Firefox (and it’s best to do so in a quiet space with minimal distraction.)

These studies, sponsored by theHapi.org, look at how humans really look at buildings, using state-of-the-art eye-tracking and facial-expression-analysis software from iMotions.com, a global purveyor of biometric tools for human behavioral research. Once on site, each study directs you to eye-tracking calibration slides – where you simply focus on a shape as it moves across the screen – before the study begins; each one takes about 4 minutes to complete.

theHapi.org hopes to share results shortly. Reach out if you have any questions or ideas for future studies; email us at, contact@theHapi.org

Building Study #12

https://my.imotions.com/collect/#s/534bf44a-2914-48c6-a2a7-1ce0ea5b9583?iMotionsStimulusBlock=f4b4edec-38dd-43c9-91f1-139ed45ab2c7

Building Study #11 – comes down February 15, 2026

https://my.imotions.com/collect/#s/cc11ef08-95d2-4062-81b4-3a8c31e5a428?iMotionsStimulusBlock=14558ac1-f044-4873-9aea-85afd3735ac9

Feel free to share this post + links; the more participants, the better!

 “Look deep into nature, and then you will understand everything better.”

– Albert Einstein

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See How Where People Look – at First Glance – Matters; in both Architecture + Advertising!

How do we take in our world? Like the animals we are, of course; that’s what 3M Visual Attention Software (VAS), reveals quickly. Developed by 3M vision scientists in 2011, VAS became a Plug-in for Photoshop in 2020, and we see it as valuable for designers of all stripes. Upload any image to this AI tool, and in less than a minute, you’ll learn what immediately gets attention.

Take the Kellogg’s Raisin Bran box, above – VAS analysis show nothing about its design is arbitrary – at all! The Visual Sequence Diagram, top left, shows where people likely focus pre-attentively (without conscious awareness or control) indicating where they look first, second, third + fourth. The Regions of Interest (or Hot Spots), in center, the areas focused on as a percentage, and the Heatmap, at right, aggregating the data, glowing reddest in areas most looked at, then fading to yellow and blue where attention diminishes, showing black in areas ignored. We see here how the smiling sun effectively brings attention to the box, which makes sense, given the human evolutionary bias for focusing on faces and direction of gaze.

Applied to Architecture, 3M VAS is equally revealing, suggesting why some buildings are frequently on tour bus stops, such as the Harvard Lampoon Building, c. 1909, in Cambridge, Massachusetts. Note how its windows and doors glow red, in the heatmap, at right, indicating they instantly draw attention. No surprise, tourists stop to take photos and selfies here!

Applied to analyze public buildings, MassArt in Boston, c. 2016, and the historic George Wythe house in Richmond Virginia, c. 1754, above, VAS suggests how the front door in the old building will be easiest for the public to find, in this study by BAC student Becky Chen. Note how the Visual Sequence Diagram starts on the door of the old building, while the first fixation is on the roof of the newer one (!) and how the front door of historic structure glows red, while the Heatmap of the modern building is bathed in black and blue. VAS suggests here how first glance ‘fixations’ are foundational for the architectural experience. (Something our nonprofit, theHapi.org, is interested in further exploring; let us know your thoughts!)

To learn more about these pilot studies, check out the Poster below, presented at the ANFA 2025 Conference in California, this month! (Click to enlarge)

    

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