Set to open on 5 July this year, after 26 months of construction, the Swiss Ovaverva swimming pool expects 100,000 visitors in its first year and its spa anticipates 35,000 customers.

Spread over four floors, the €67m (US$91.8m, £55.3m) development in St. Moritz, Switzerland, is on track for completion, including a women-only panorama sauna, bio sauna and steamroom.

Mixed gender bathing areas include the 915sq m (9,948sq ft) rosatsch bath – a large whirlpool – and more steamrooms, an ice fountain, hot stone room and a salt therapy suite.

The 1,620sq m (17,437sq ft) wellness area also comprises Finnish saunas and six treatment rooms, all of which are 95% complete – spa equipment and furniture will arrive early in May.

Staff are beginning their training and the rosatsch bath will be filled up with lake water within the next two weeks, ecologically pumped back into the lake once cooled again.

Under the direction of Swiss-based architects from Bearth & Deplazes and Morger + Detti, the next step for the development is to finish the reception area.

Kneipp hydrotherapy treatments are on offer in the wellness centre, in addition to locally-sourced skin care products by Soglio.

Members of the Ovaverva will benefit from other spa and pool facilities across Switzerland, including the Thermalbad Zurzach spa, the fitness centre at Zurich airport, thermal baths in Bad Säckingen and the Thermalbad Baden spa which is opening soon.

The centre also offers cross country skiing, a restaurant and an outdoor sports club at the 64,000sq m (688,890sq ft) facility.