Design studio Amos Goldreich Architecture have completed a “dynamic and tranquil” health club in London for Xtend Barre, with the site earmarked as the American fitness brand’s first flagship European studio.

Located on Marylebone High Street, the 3,000sq ft (278sq m) club is a contemporary space for Xtend Barre’s “adrenaline-fuelled” training classes – a fusion of ballet, dance and Pilates that enhance flexibility, improve balance, and challenge the core.

The design team were tasked with transforming a low-lit and "poorly planned" basement office into a welcoming and calming space.

The original interior was stripped down and reconfigured to create an airy studio, with enough room for the brand’s all-important barres – stationary handrails, typically used by ballet dancers, that provide support during various exercises.

In order to create an expansive feel and add a sense of light to the studio – which only has obscured windows on three sides due to its lower ground-floor location – the walls and built-in furniture have been painted white and splashes of colour introduced through loose furniture, fitness equipment, a food retail section and a clothing retail zone.

White porcelain tiles and large mirrors have been installed in the unisex changing areas.

“Amos and his team made our vision their own,” said Catie Miller, owner and founder of Xtend Barre London. “The end result speaks for itself and I am incredibly thankful to be building a wonderful community within the studio space they created."

Xtend Barre has 62 franchised locations around the world and 99 licensed studios, including ones in Indonesia, Japan, China, Singapore, Australia and the US.