New Zealand's Spa at QE in Rotorua has revealed refurbishments to its facility, which began its life as a rehabilitation centre offering therapeutic spa treatments for soldiers returning from World War II.

The spa, located on the shores of Lake Rotorua, has added seven new treatment rooms, taking the total to 15, including two Aix massage rooms, three dry massage rooms and two new mud baths.

A 53sq m (570sq ft) couples' mud bath suite comprises a double mud bath, resting area, two massage rooms and bathroom, toilet and shower facilities.

Other improvements include a new 236sq m (2,540sq ft) gym with views of the village green, and renovations to the physiotherapy room and exercise pool.

The spa employs medical support from clinicians, physiotherapists and fitness instructors as part of its medi-spa service.

Marketing coordinator for the spa Mandy Godo said a flavour of yesteryear has been retained in the décor in tribute to the facility's history.

"It's been fascinating to watch the old building reveal its secrets - from glowing native wood floorboards, now in their polished glory, to the giant beams of the ceilings, exposing the building's strengths."