Hidden below the streets of Bath, a quirky new spa has opened which celebrates the ancient city's heritage.

Spa 15 – located in the No. 15 Great Pulteney hotel on Great Pulteney Street, Bath – includes four themed treatment rooms, a large cedarwood hot tub within exposed stone vaults, a barrel-shaped sauna and a steam room.

In keeping with No. 15’s celebration of local up-and-coming artists, the treatment rooms showcase local artworks to give each its own personality.

The Tapestry Room is designed as a warm, cocooning space where artist Emma Nicole Straw’s landscape-inspired tapestries adorn the walls in shades of burnt orange, blue and cream.

The Sock Room includes a collection of hand-knitted socks from artist Akane Ono’s ‘Sock Diary’ pinned to the wall. Inspired by events in her personal life, each story also has details in a hand-written tag.

The Coral Room features 3D mixed-media coral reef across the ceiling, created by artist Deborah Kolumbus. The stark white piece is made of silk, wool, paper, wire, plaster, plastic and wax and is inspired by Kolumbus’ passion for environmental issues, providing a reminder of the coral reefs disappearing around the world.

The Pottery Room features an eclectic collection of whimsical sculptures by artist Chantelle Raybould, inspired by the ocean, which sit alongside Bethany Walmsley’s textural ceramic plates and sculptures and life-like porcelain hands and ceramic sculptures by Ying Sheung Wong.

“We’re thrilled with the overall look and feel of Spa 15 and we hope we’ve created a luxurious and supremely relaxing space that’s unlike anything our guests might have experienced before,” said general manager Jonathan Walker.

“There’s a real focus on statement art and ambient lighting, as well as delivering amazing treatments from ila and Natura Bissé which offer hotel guests and locals alike a chance to escape the everyday stresses of their busy lives.”

Signature treatments include the ila Inner Peace treatment and Natura Bisse’s Time Out treatment, and the spa includes everything from detoxifying scrubs to reflexology and top-to-toe Himalayan treatments.

The cedarwood hot tub and cylindrical sauna are set in a private corner of the spa, and the relaxation room features a roaring fire.

Additionally, the 40th and final bedroom revealed in the hotel, The Hideout Suite, will have its own spa experience bathroom with hot tub, sitting room, dressing room and dedicated Sonos system.