
Since ancient times, the island of Ischia has been renowned for its thermal waters, which have made it one of Europe’s leading spa destinations. All the thermal parks are nestled in a magnificent natural setting, surrounded by lush greenery and the azure sea, and feature swimming pools, Kneipp circuits, saunas and massage centres.
During your stay on the island, make time to relax in one of the numerous thermal gardens, such as the Negombo Thermal Park, which boasts numerous pools arranged on the terraces of a hillside, and the Poseidon Gardens, the largest thermal park on Ischia with 20 pools set among greenery just a stone’s throw from the sea and Citara Bay.
The island of Ischia is a true thermal paradise in the Mediterranean, with over 100 springs and 29 thermal basins. Its waters, characterised by rich mineralisation, spring forth at temperatures ranging between 20° and 90°C, offering a wide range of therapeutic benefits.

Poseidon Gardens is the largest and most prestigious thermal complex on the island, spanning 60,000 square metres in the stunning Citara Bay. The twenty thermal pools, with temperatures carefully maintained between 28° and 40°C, are spread across panoramic terraces sloping down to the sea. Each pool is designed for specific therapeutic benefits: the Olympic pool at 28°C is perfect for physical activity, whilst the Kneipp pools alternate between temperatures of 15°C and 40°C to stimulate circulation.
The state-of-the-art wellness centre offers personalised treatments, from traditional therapies to innovative massages. The private beach stretching 700 metres provides an exclusive bathing experience with direct access to the pools. The panoramic restaurant serves traditional Mediterranean dishes, whilst the thermal bar offers herbal teas and fresh juices.
These ancient Roman baths represent a journey through time across two thousand years of thermal history. Carved directly from green tufa, they preserve the authentic atmosphere of the Roman era. The springs, which flow at temperatures between 40° and 90°C, feed a series of pools and natural caves where visitors can bathe following ancient thermal rituals.
The thermal circuit includes the original Roman pools, natural sauna caves and areas for traditional mud therapy. The rustic and authentic setting offers a unique experience: visitors can undergo treatments following the same practices used by the ancient Romans. The complex also includes outdoor rest areas surrounded by Mediterranean vegetation.
Located in the enchanting Maronti Bay, the Apollon & Aphrodite Thermal Park stands out for its privileged position with panoramic sea views. The complex offers eight thermal pools with differentiated temperatures, each dedicated to specific therapeutic benefits. The main pool, with thermal water at 36°C, is equipped with hydromassage jets and neck waterfalls for treating muscle tension.
The wellness centre offers a wide range of cosmetic and therapeutic treatments, combining the properties of thermal waters with modern techniques. A distinctive feature is the natural thermal cave, where visitors can enjoy steam baths and detoxifying treatments. The park also includes a fully equipped private beach, a panoramic restaurant serving Mediterranean cuisine and a fitness centre with views over the gulf.

Situated in the picturesque San Montano Bay, Negombo represents a unique fusion of thermal waters and contemporary art. The twelve thermal pools are seamlessly integrated into the natural landscape, each with a specific temperature and mineral composition. The park distinguishes itself through its innovative hydrotherapy circuits, which include neck waterfalls, Japanese pools and hydromassage zones.
Contemporary artworks, thoughtfully distributed among Mediterranean gardens and relaxation areas, create a unique atmosphere. The complex also features a spa with exclusive treatments, a panoramic fitness centre and restaurants offering local and international cuisine. The private beach, with its distinctive crescent shape, offers a spectacular view over the gulf.
Known since ancient Greece, this spring is celebrated for the healing properties of its waters, particularly effective for dermatological conditions. The modern thermal complex respects the island’s traditional architecture, with panoramic terraces and hanging gardens. The waters, with a unique mineral composition, are used for both hydrotherapy and specific treatments.
The centre offers outdoor thermal showers with sea views, areas for heliotherapy and relaxation zones surrounded by greenery. The centre’s experts provide personalised protocols that combine the use of thermal waters with complementary treatments. The small attached museum tells the millennial history of the spring through archaeological finds and historical documents.

This location represents one of the island’s most extraordinary thermal phenomena. The natural pools, carved into volcanic rock, offer a unique thermal experience where warm waters mingle with seawater. The temperature ranges from 30° to 90°C depending on the area and tide, creating ideal microclimates for various therapeutic benefits.
24-hour access allows you to enjoy this experience at any time, with sunset and night-time hours offering particularly evocative atmospheres. The natural pools are arranged on different levels, some closer to the sea for a more temperate experience, others more secluded for higher temperatures. The sandy seabed also allows for natural sand therapy.
This unique beach is characterised by volcanic fumaroles that naturally heat the sand. The local tradition of sand-cooking, practised for centuries, represents a cultural attraction as well as a thermal one. Ground temperatures can reach 100°C in some spots, creating an extraordinary natural phenomenon.
The thermal springs that flow directly onto the beach create small natural pools where you can bathe. The landscape, characterised by volcanic rock formations and Mediterranean vegetation, provides a suggestive setting. The beach is accessible both by sea and via a panoramic footpath, offering spectacular views over the Gulf of Naples.
Ischia boasts a rich tradition of thermal hotels, establishments that combine hospitality with the benefits of thermal waters. These hotels are distinguished by their own thermal springs or direct access to the thermal spas.
In the following map you can see the location of the main places of interest mentioned in this article.

