Klay
Five floors of fitness, food, and friends in a 19th-century factory
Editor’s Take
The restaurant is open to non-members — book for dinner to scope the vibe before committing to membership. The Thursday 19:00 boxing class is legendary and fills up 48 hours in advance.
About
Klay occupies a 19th-century industrial building in the Sentier district, and the conversion is inspired: exposed iron beams, original brickwork, and vast windows flooding five floors with natural light. It functions as gym, pool club, hammam, and restaurant in a single vertical village. The ground-floor restaurant — with a menu that could stand alone in the neighborhood — sets the tone: this is a place designed for lingering, not just lifting. The fitness offer is substantial. A 25-metre pool sits in a light-filled atrium. Group classes run all day — boxing, yoga, Pilates, HIIT — and the energy in the packed evening sessions is electric. The hammam on the lower level provides genuine recovery, with eucalyptus steam and cold rinses. The gym floors are well-equipped without feeling like a warehouse. But Klay's real genius is social architecture. The restaurant and bar create a natural meeting point before and after training. The communal changing areas, the shared pool lanes, the group classes — everything nudges interaction. It's the rare fitness space where people make actual friends, not just nod at regulars. Weekend brunch after a Saturday morning class has become a Sentier institution.
Treatments & Services
Signature: Rooftop boxing sessions
Highlights
- ✓19th-century factory converted to 5-floor fitness complex
- ✓25m indoor pool
- ✓Hammam and recovery area
- ✓Full-service restaurant and bar
- ✓Group classes: boxing, yoga, pilates, HIIT
Best For
Social fitness enthusiasts who want their gym to double as a third place with great food
Contact & Info
Phone
+33 1 40 26 00 00Website
www.klay.frHours
Mon–Fri 7:00–22:30, Sat–Sun 9:00–20:00
Languages
French, English
Similar Venues
Ken Club
A legendary Parisian fitness institution in the 16th arrondissement reopening in 2026, with a 20-metre pool, saunas, hammams, cold baths, and 150+ hours of weekly group classes.
Book now →
Ozenhit
A full-service wellness club inside the SO/ Paris hotel in the Marais, built around a 25-metre ozone pool with hammam, sauna, cycling studio, co-working, and restaurant-bar at €190 per month.
Book now →
L'Usine
Premium fitness club occupying converted historic buildings across Paris, with steam, sauna, boxing, yoga, a juice bar, and a multi-city network spanning Brussels and Geneva at €1,700 per year.
Book now →
Wellness Sport Club Paris Republique
A 2,000-square-metre all-inclusive fitness and wellness club near Place de la Republique with pool, hammam, sauna, 150+ machines, aquabike, and 160+ weekly group classes.
Book now →