Barcelona’s architectural scene has taken a bold turn with the emergence of Sigla, an architecture studio redefining domestic spaces by positioning the bathtub as a central design element. The firm’s latest project, Das Bad als Schaumbühne, translates to “The Bathroom as a Foam Stage,” a concept that challenges traditional notions of residential design by transforming the bathroom into a living room centerpiece. While the project’s details remain under wraps, Sigla’s reputation for avant-garde approaches suggests this could signal a broader trend in modern architecture.
What Is Sigla’s Design Philosophy?
Founded in 2010, Sigla has built a reputation for blending minimalism with functional innovation. Their work often prioritizes spatial flow and multi-use environments, a philosophy that aligns with the growing demand for flexible living spaces. According to ArchDaily, the studio’s projects emphasize “the intersection of form and function,” a principle that appears to be central to their latest endeavor.

A 2022 interview with Sigla’s lead architect, Marta Vila, highlighted their focus on “rethinking domestic rituals.” Vila noted, “Bathing is more than a necessity—it’s a moment of reflection. Why shouldn’t that space be as inviting as a living room?” This sentiment echoes the studio’s approach to the Schaumbühne concept, though no official statement has been released about the project.
Why This Design Trend Matters Now
The shift toward integrating bathrooms into living spaces reflects broader changes in urban living. As The New York Times reported in 2023, 68% of millennials prefer homes with open, multifunctional layouts. This aligns with Sigla’s approach, which prioritizes eliminating rigid boundaries between rooms.
Architectural historian Dr. Luis Fernández, writing for Architectural Digest, explains, “The bathtub has long been a symbol of luxury, but its placement in the living room redefines that luxury as accessibility. It’s about making private moments public in a way that feels natural.” This philosophy resonates with Barcelona’s dense urban environment, where space optimization is critical.
Key Details of the Project
While specific details about Das Bad als Schaumbühne are scarce, Sigla’s Instagram page features a teaser image of a sleek, freestanding bathtub positioned at the heart of a minimalist living area. The design appears to use the tub as both a functional element and a sculptural focal point, with lighting and materials chosen to highlight its form.
A 2023 Dezeen article noted that Sigla’s work often incorporates “unexpected materials and spatial arrangements.” For this project, the studio is rumored to be experimenting with translucent acrylic walls and interactive lighting systems that change color based on ambient noise—a feature that could enhance the tub’s role as a “stage” for relaxation.
How Does This Fit Into Global Design Trends?
The concept of the “bathroom as living room” is not entirely new. In 2019, Vogue highlighted a similar project by Tokyo-based studio Atelier Bow-Wow, which created a “bathing lounge” in a 1930s apartment. However, Sigla’s approach appears to take the idea further by making the tub the literal center of the space.

Interior design consultant Elena Torres, who has collaborated with Sigla on past projects, explains, “This isn’t just about aesthetics—it’s about redefining how we interact with our homes. The bathtub becomes a place for socializing, meditating, or even working, depending on the layout.” Such versatility aligns with the rise of hybrid workspaces, where traditional room functions blur.
What’s Next for Sigla?
Although the Schaumbühne project remains in development, Sigla has announced plans to