25hours Hotel The Circle – Sculptural sauna architecture at premium level North Rhine-Westphalia

A masterpiece of form, function & craftsmanship.

In the iconic 25hours Hotel The Circle in Cologne, a sauna was created that is not just a wellness room - but an architectural statement. Designed like a sculpture on the outside, modern and purist on the inside: this facility combines uncompromising quality craftsmanship with an extraordinary design language.

Sculptural outer shell - curves to perfection

The exterior design of the sauna is a real eye-catcher: vertical round slats with harmoniously curved lines create a three-dimensional effect reminiscent of a handmade design object. Precise transitions, flowing shapes and clear geometry make this sauna element a highlight of modern interior design.

Hemlock interior - warm, modern, timeless

Inside, Erdmann Sauna & Spa relies on high-quality Canadian hemlock, which impresses with its calm appearance, natural elegance and optimum heat output.The simple abachi benches, the clear design and the perfectly integrated lighting create a modern, relaxed atmosphere - ideal for hotel guests who value design and well-being.

Aesthetics & function in harmony

This sauna shows how selected materials, intelligent planning and perfect craftsmanship combine to create a unique overall concept:

• A sculptural work of art on the outside
• Inside a functional wellness room at premium level
• Design that integrates seamlessly into the architecture of the 25hours Hotel The Circle

Erdmann Sauna & Spa - design that leaves an impression

This facility exemplifies our expertise in the upscale hotel and spa sector: individual design, bespoke execution and the ability to create wellness spaces that are not just used - but experienced.