Work has began on a spa in Leukerbad, in the heart of the Swiss Alps, where the Valasis mountains thermal waters have bubbled at 51 degrees since Roman times.

Situated 1,402m above sea level, the 51 degrees Spa will have more than 200 treatments on the menu.

The 800sq m (8,611 sq ft) spa – slated for a 2015 opening - will incorporate two rituals rooted in the cultures of Eastern Europe, Japan and Switzerland.

The Russian Banya ritual will be a contemporary interpretation of traditions found in Russian bathhouses and Japanese Sentõ saunas although many of its authentic elements will be maintained, such as the communal and social atmosphere.

Guests will alternate their time between two sauna chambers, a cool plunge pool and the Banya Garden featuring hot tubs, a relaxation area, private dining facilities and a collection of treatment suites.

Meanwhile the Alpine Bathhouse ritual will showcase the thermal water and its natural source. Three thermal experiences will be offered to guests including indoor and outdoor mineral pools, both with views across the valley and mountain ranges, and hydro-massage facilities in an al fresco environment.

Created by spa development and management company, Under a Tree, all rituals and therapies will focus on the positive everyday effects of bathing in thermal water.

The thermal water treatments will aim to promote relaxation, detoxification, sports conditioning and stress management.

Under a Tree founder Amy McDonald has worked in the industry for over thirty years, creating innovative spas throughout Europe and North and South America.

McDonald said: "The Spa at 51 degrees is grounded in the relationships between Leukerbad's ancient waters, natural setting and integrated approach to wellbeing."

The new development also includes thirty luxury residences, which are being created by luxury property developers and investors, Swiss Development Group.

Designed by Michael Graves, the residences will have an unlimited supply of Leukerbad's thermal waters and spa treatment areas.