Spa Thermal Park (Otumuheke Stream)

Hot Water Beach is a world-famous coastal phenomenon where underground geothermal springs filter up through the sand between the high and low tide marks. Visitors rent or bring shovels to dig out their own personalized spa pools in the sand, which rapidly fill with steaming, mineral-rich thermal water. The hot water contains high amounts of sodium chloride and calcium, filtering from deep subterranean reservoirs. The soaking experience is entirely dependent on ocean tides, as the thermal area is completely submerged by the sea outside a two-hour window on either side of low tide. The beach is scenic but features hazardous rip currents, making swimming in the open ocean highly dangerous. The experience is entirely free, though parking and shovel rentals incur small costs.

Polynesian Spa is a world-class, heavily developed thermal bathing complex situated on the scenic shores of Lake Rotorua. The facility utilizes two distinct natural springs: the acidic Priest Spring, which relieves tired muscles and arthritis, and the alkaline Rachel Spring, which nourishes the skin with silica. The complex features 28 mineral pools divided into deluxe lakefront areas, adult-only deep pools, private cabins, and a large family spa with a hydro slide. The pools are surrounded by beautifully manicured native flora with sweeping vistas across the volcanic lake waters. A full-service wellness day spa provides premium mud wraps and hydrotherapy treatments. It is completely accessible and requires standard swimsuits.

Kerosene Creek is a widely popular, completely natural geothermal stream that flows through a dense forest of native ferns and exotic pines. Bathers sit directly in the rushing warm river current or relax underneath a two-meter natural waterfall that tumbles into a deep sand-bottomed pool. The water contains natural volcanic sulfur, giving it an earthy aroma and a soothing, natural feel. The attraction is entirely free and undeveloped, lacking lifeguards, changing facilities, or toilets. Visitors change in the forest and leave their belongings on the riverbanks. It offers a raw, magical wilderness experience that is highly popular with both backpackers and locals. Theft from vehicles in the isolated gravel parking lot is a common caveat, so travelers must leave no valuables inside.