1897 – A Footwear Revolution
At the turn of the 20th century, life in Germany was undergoing rapid change. Steam engines, railways, and electricity had become commonplace across much of Europe. As the growing middle class drove increasing demand for consumer goods, many traditional crafts began to industrialize.
New factories were built to meet this demand, leading to the decline of many artisans including traditional shoemakers. No longer commissioned to produce entire shoes, many shoemakers shifted their focus to repairing factory-made footwear.
Konrad Birkenstock, however, remained deeply committed to the quality of craftsmanship and became increasingly interested in the orthopedic role of footwear.
Born in 1873, Konrad Birkenstock the great-great-grandson of Johann Adam Birkenstock (born in 1754) was responsible for the first true innovation in modern shoemaking within the family. In 1896, he opened a shoemaking workshop in Frankfurt, near Langen-Bergheim, home to the family’s ancestral residence. At the time, Frankfurt was a major center of the shoemaking trade.
Konrad became part of the “shoe reform” movement, putting his theories into practice. Like other forward-thinking craftsmen of his generation, he began designing shoe lasts whose structure followed the natural anatomy of the foot. Shoe lasts were and still are a critical component of the footwear manufacturing process, determining both the size and shape of the finished product.
In 1897, Konrad Birkenstock developed a fully anatomically shaped shoe last, including an ergonomically designed sole. This groundbreaking innovation featured a rounded heel, a flexible sole, and distinct left and right sides a revolutionary step that would forever change the way shoes were designed and worn.
1964–1983 – More Iconic Models
A New Closed Design: Zürich (1964)
Karl Birkenstock was gaining momentum. Driven by creativity, he went on to develop several groundbreaking models in the years that followed. In the fall of 1964, at the “Foot and Shoe” trade fair in Hamburg, he introduced a “new closed model,” later known as the Zürich.
Karl retained the brutalist base structure, creating a clean design while keeping the construction visibly integrated into the shoe’s aesthetic. Featuring a wide upper, the model was offered in leather for outdoor wear and wool for slipper-style use.
At the time, sandals especially for men were still uncommon. Like the Madrid, the Zürich challenged conventions but offered greater foot coverage. From a functional standpoint, it appealed particularly to drivers, seniors, and professionals, who appreciated the added coverage, support, and grip provided by the wider strap.
Both models were especially embraced by alternative movements, as well as by the general public, which was beginning to take a closer interest in the benefits of health-focused footwear. The once-radical design concept gradually became more widely accepted.
November 1973 marks one of the most important milestones in the history of Birkenstock: the launch of the Arizona.
Inspired by the Zürich, Karl Birkenstock “opened up” the shoe while preserving its form and adhering to his strict design principles. The original Arizona featured a synthetic upper lined with genuine leather, available in white or black.
Over the following four decades, hundreds of variations were created and millions of pairs sold, elevating the Arizona to best-seller status. Today, it is the very embodiment of the Birkenstock sandal.
The Arizona regularly appears in the pages of the world’s leading fashion magazines and on the feet of international celebrities across generations, including Steve Jobs, Leonardo DiCaprio, Julia Roberts, Charlize Theron, Tracee Ellis Ross, Jeon Jungkook, Gigi Hadid, and Kaia Gerber.
The Cork Clog: Boston (1976)In the 1970s, Birkenstock began developing a cork clog. Unlike many traditional wooden clogs of the era which were heavy and rigid the Boston was designed to be lightweight and flexible.
Launched in 1976 in a wide range of materials and colors, this minimalist closed-toe model quickly established itself as an ideal shoe for both indoor and outdoor wear, work and leisure alike.
Combining Birkenstock’s legendary orthopedic functionality and quality with increasingly fashion-forward styles—including newer Shearling and Big Buckle versions—the Boston gained a devoted following. Among its fans are celebrities such as Whoopi Goldberg, Sienna Miller, Keira Knightley, Robert Pattinson, Kanye West, and Jason Momoa.
The Thong Sandal: Gizeh (1983)Karl Birkenstock’s designs rarely followed mainstream fashion trends. His approach to style was largely limited to color selection, while the iconic, minimalist design of his sandals remained unchanged.
However, when thong sandals became increasingly popular, Karl recognized an opportunity to create a new iconic style. The thong silhouette was not naturally compatible with the Birkenstock footbed but Karl was determined to make it work.
After three years of meticulous experimentation, the brand’s first designer thong sandal was completed. The Gizeh was an immediate success and remains part of the brand’s Core Collection to this day.
Over the years, this elegant model has been worn by celebrities such as Julianne Moore, Heidi Klum, Anne Hathaway, and Ashley Olsen.







