The World in Miniature

In the model of St. Peter’s Square in Vatican City, the statues of saints on the colonnades wear clothing made of paper napkins from the Wunderland bistro. Credit: Andreas Meichsner for The New York Times
In the model of St. Peter’s Square in Vatican City, the statues of saints on the colonnades wear clothing made of paper napkins from the Wunderland bistro. Credit: Andreas Meichsner for The New York Times
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The World in Miniature

In the model of St. Peter’s Square in Vatican City, the statues of saints on the colonnades wear clothing made of paper napkins from the Wunderland bistro. Credit: Andreas Meichsner for The New York Times
In the model of St. Peter’s Square in Vatican City, the statues of saints on the colonnades wear clothing made of paper napkins from the Wunderland bistro. Credit: Andreas Meichsner for The New York Times

We had an all-encompassing view of Rio de Janeiro and its surroundings: Sugarloaf Mountain, the Christ the Redeemer statue, Copacabana Beach. Architectural novelties like the Niterói Contemporary Art Museum and the Metropolitan Cathedral stood out among the sea of buildings, as trains and streetcars passed by, and thousands of dancers swayed and strutted during the city’s Carnival celebration.

Yet Rio was more than 6,000 miles away, while my husband, son and I stood in a building in the Speicherstadt, the historic warehouse district in Hamburg, Germany.

The scene we admired is one of more than a dozen sprawling exhibits at Miniatur Wunderland, home to the world’s largest model railway and largest miniature airport. The meticulous replica of Rio came on line as Wunderland’s newest exhibit in December 2021, constructed over four years in partnership with a family-owned model-making company out of Argentina.

“Mind-blowing,” my husband said several times during our five hours of marveling at reproductions of Germany, Italy, Scandinavia, the United States and other sites, complete with tiny hand-painted figures participating in the myriad activities of daily life. Through all of the landscapes, trains continually chugged along a total of 16,138 meters (almost 53,000 feet) of track.

The project started in 2000 when the twin brothers Frederik and Gerrit Braun, then 32, dreamed of creating the largest model railroad in the world. The siblings, who grew up as train buffs, wound up running a Hamburg nightclub and record label in the 1990s, but eventually they wanted a lifestyle change. With help from friends and family, the Brauns opened Miniatur Wunderland’s life-size doors in 2001.

In the 21 years since, the attraction has drawn more than 21 million visitors from around the world, becoming one of Germany’s top tourist draws. Yet in the United States, Miniatur Wunderland is primarily known among railroad buffs and other hobbyists.

Count us lucky to have a son, now 15, who has been obsessed with planes, trains, cars and anything else that moves mechanically since he was old enough to point. Lucky because I hadn’t known about Miniatur Wunderland, despite having made numerous trips to Germany, as the daughter of two German-born parents. My son, on the other hand, had been talking about Wunderland for years, ever since he discovered some YouTube videos of it. He was particularly interested in the working airport, which averages 500 takeoffs and landings a day, displayed on a flight monitor (the difference: these model planes are always on time).

So when we planned a trip back to Germany in August to see family in Munich, we added a detour to Hamburg to visit Miniatur Wunderland (and bought tickets online a month in advance for the timed entry). My husband and I wanted to indulge our son, an only child, but what we didn’t anticipate was our own enchantment with this tiny world, full of painstaking detail and technological wizardry, sure, but also bursting with whimsy and humor.

Take the diorama of Italy, for instance. Among the faithful reproductions of St. Peter’s Basilica, the Colosseum and Mount Vesuvius (complete with regular eruptions), there are little moving vignettes, activated by pressing a button (200 such buttons exist throughout Wunderland). In one, Pinocchio’s nose grows six inches across the room of a tiny cottage. Elsewhere, a small Michelangelo bounces on a trampoline to reach the Sistine Chapel ceiling with his paintbrush. Creative license? Absolutely.

“That was the model builder saying, ‘I could have put Michelangelo on scaffolding, but nobody would see it. What could I use instead to show him painting?’” said Thomas Cerny, a software developer and spokesman for Miniatur Wunderland, in a recent phone interview. “The model builders are what make the whole exhibition special. If you know them, you can even tell who built what, as each one has their own sense of humor,” Mr. Cerny added, while sharing with a chuckle that the 100 or so statues of saints on the colonnades in St. Peter’s Square wear clothing made of paper napkins from the Wunderland bistro.

As we moved from exhibit to exhibit, directing each other this way and that to point out some new captivating feature, we appreciated that the landscapes were anything but static. In addition to the trains, cars and boats that travel about (in the Scandinavia section, ships navigate tides in real water), most of the almost inch-high figures are doing something, animated in their depiction if not through actual movement. “As time went on, the model railway became less important, and the storytelling and the creativity became much more important,” Mr. Cerny said.

On the fourth floor, we passed by the central command for all of the exhibits, filled with large screens and electronics. It was like an open kitchen. Not only do the systems that control the trains, vehicles and lighting originate here, but video cameras let staffers monitor things like train derailments and other glitches that can occur with so many moving parts.

We discovered that it’s not always sunny in Miniatur Wunderland, either. Every 12 minutes, the exhibits shift from day to a three-minute-long night, and the real rooms darken as almost half a million LED lights twinkle within the dioramas. Each of those lights is programmed to turn on in sequence rather than all at once, creating a condensed simulation of nightfall. “The brothers are perfectionists,” Mr. Cerny said of the founders.

The New York Times



Obesity Won’t Be Solely Defined by BMI under New Plan for Diagnosis by Global Experts

A man uses measuring tape on his waist in California on Jan. 9, 2025. (AP)
A man uses measuring tape on his waist in California on Jan. 9, 2025. (AP)
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Obesity Won’t Be Solely Defined by BMI under New Plan for Diagnosis by Global Experts

A man uses measuring tape on his waist in California on Jan. 9, 2025. (AP)
A man uses measuring tape on his waist in California on Jan. 9, 2025. (AP)

A group of global experts is proposing a new way to define and diagnose obesity, reducing the emphasis on the controversial body mass index and hoping to better identify people who need treatment for the disease caused by excess body fat.

Under recommendations released Tuesday night, obesity would no longer be defined solely by BMI, a calculation of height and weight, but combined with other measurements, such as waist circumference, plus evidence of health problems tied to extra pounds.

Obesity is estimated to affect more than 1 billion people worldwide. In the US, about 40% of adults have obesity, according to the US Centers for Disease Control and Prevention.

"The whole goal of this is to get a more precise definition so that we are targeting the people who actually need the help most," said Dr. David Cummings, an obesity expert at the University of Washington and one of the 58 authors of the report published in The Lancet Diabetes & Endocrinology journal.

The report introduces two new diagnostic categories: clinical obesity and pre-clinical obesity.

People with clinical obesity meet BMI and other markers of obesity and have evidence of organ, tissue or other problems caused by excess weight. That could include heart disease, high blood pressure, liver or kidney disease or chronic severe knee or hip pain. These people would be eligible for treatments, including diet and exercise interventions and obesity medications.

People with pre-clinical obesity are at risk for those conditions, but have no ongoing illness, the report says.

BMI has long been considered a flawed measure that can over-diagnose or underdiagnose obesity, which is currently defined as a BMI of 30 or more. But people with excess body fat do not always have a BMI above 30, the report notes. And people with high muscle mass — football players or other athletes — may have a high BMI despite normal fat mass.

Under the new criteria, about 20% of people who used to be classified as obese would no longer meet the definition, preliminary analysis suggests. And about 20% of people with serious health effects but lower BMI would now be considered clinically obese, experts said.

"It wouldn't dramatically change the percentage of people being defined as having obesity, but it would better diagnose the people who really have clinically significant excess fat," Cummings said.

The new definitions have been endorsed by more than 75 medical organizations around the world, but it's not clear how widely or quickly they could be adopted in practice. The report acknowledges that implementation of the recommendations "will carry significant costs and workforce implications."

A spokesman for the health insurance trade group AHIP, formerly known as America's Health Insurance Plans, said "it's too early at this point to gauge how plans will incorporate these criteria into coverage or other policies."

There are practical issues to consider, said Dr. Katherine Saunders, an obesity expert at Weill Cornell Medicine and co-founder of the obesity treatment company FlyteHealth. Measuring waist circumference sounds simple, but protocols differ, many doctors aren't trained accurately and standard medical tape measures aren't big enough for many people with obesity.

In addition, determining the difference between clinical and pre-clinical obesity would require a comprehensive health assessment and lab tests, she noted.

"For a new classification system to be widely adopted, it would also need to be extremely quick, inexpensive, and reliable," she said.

The new definitions are likely to be confusing, said Kate Bauer, a nutrition expert at the University of Michigan School of Public Health.

"The public likes and needs simple messages. I don't think this differentiation is going to change anything," she said.

Overhauling the definition of obesity will take time, acknowledged Dr. Robert Kushner, an obesity expert at the Northwestern Feinberg School of Medicine and a co-author of the report.

"This is the first step in the process," he said. "I think it's going to begin the conversation."