What secrets lie behind this Art Nouveau façade and its stunning cork-shaped roof?

Published by Graziella de Sortiraparis · Photos by Graziella de Sortiraparis · Updated on December 12, 2025 at 01:12 a.m.
At 140 Rue de Rennes in Paris stands a striking building, its corner turret unlike any other. Celebrating the heyday of department stores and the Art Nouveau movement, the former Félix Potin commercial building is a testament to innovation and bold design.

Nestled in the heart of the 6th arrondissement of Paris stands a architectural gem that captures everyone's attention: the former Félix Potin grocery building. Erected in the early 20th century, this six-story retail space is a vibrant showcase of Art Nouveau curves and a marvel of technical daring. Yet, it’s the building’s flamboyant corner turret, topped with a dome that resembles a champagne cork, which most piques curiosity. Discover the story behind this spectacular façade!

An Architectural Masterpiece of Advertising

The building at 140-140 bis Rue de Rennes, in the 6th arrondissement of Paris, is not your average structure. Commissioned in 1904 by the retail chain Félix Potin, it was designed to serve as both a flagship store and the company's headquarters, featuring spaces for staff as well as residences for the management team. Architect Paul Auscher was tasked with bringing this ambitious project to life, with the primary goal of catching the eye of passersby.

For this project, Auscher created a true open-air billboard. The ground floor and mezzanine are entirely glazed, turning the retail space into a massive storefront. The Art Nouveau style is expressed on the facades through vegetal motifs and a playful rhythm of undulations on the upper levels, giving the entire structure a sense of movement and fluidity characteristic of the period. Not to be overlooked are the mosaics by Henri Bichi that evoke the house's specialties.

Que cache cette façade Art nouveau et ce toit en forme de bouchon de champagne ?Que cache cette façade Art nouveau et ce toit en forme de bouchon de champagne ?Que cache cette façade Art nouveau et ce toit en forme de bouchon de champagne ?Que cache cette façade Art nouveau et ce toit en forme de bouchon de champagne ?

The Extravagant Pepper Box

The highlight of this daring design is unquestionably the building's corner angle. Treated in a striking manner, the corner turret has earned the architectural nickname of a "pepper shaker". Auscher pushed this feature to the limit, giving it such a distinctive shape that some describe it as a stylized bottle, others as a meringue, or, more fittingly for a food-related sign, a champagne cork ready to pop. Learn more about the surprising history behind the iconic round shape of the champagne flute.

It is atop the dome that crowns this structure that the name of the brand, "Félix Potin," is still clearly visible. This tower serves as the brand's architectural signature: a monumental urban landmark that transforms the building into a giant advertising icon.

The Boldness of Reinforced Concrete

Beyond its exuberant design, the Félix Potin building is also an engineering marvel. It ranks among the earliest Parisian structures entirely constructed with reinforced concrete. This innovative choice, still uncommon at the start of the 20th century, enabled Paul Auscher to create expansive storefronts for the retail space and to achieve sleek, flowing lines that would be impossible with traditional masonry.

Today, even after the Félix Potin company was liquidated in 1995, this listed building, now home to a fashion retail store, remains a captivating testament to the golden age of Parisian retailing.

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140 Rue de Rennes
75006 Paris 6

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