Argentina's first and only beer spa. At Mario Bravo 890 it offers circuits for couples and groups with malt and hops hydromassage, hop-infused sauna, simultaneous massages and unlimited draft beer. A Buenos Aires take on Czech balneotherapy, with five themed rituals and the only spa taproom in South America.

The global pioneer of the wine spa. Caudalie invented vinotherapy using grape-seed polyphenols in the heart of a Bordeaux vineyard. The Barrique Bath, grape-pulp wrap and honey-and-wine massage are signature rituals. Today it has locations in Paris, New York, Madrid and Marrakech.

The world's most famous chocolate spa, inside the historic Hotel Hershey. Cocoa baths, chocolate foot fondues, brown sugar scrubs and cocoa butter massages. The whole aesthetic, from the walls to the scent, is deluxe Willy Wonka.

The most eccentric onsen water park in the world. Separate pools of red wine, Japanese sake, freshly ground coffee, green tea and seasonal ramen and curry. Each pool is refreshed several times a day with the real liquid diluted in thermal water.

The only hay bath with protected designation in the world. The guest is submerged in freshly cut, fermented Alpine hay that releases essential oils. The Tyrolean tradition, documented since the 19th century, is now recognised as a balneotherapy treatment by the Italian health system.

A contemporary reinterpretation of Roman, Arab and Ottoman baths inside restored historic buildings. The star is the Wine Bath: a private tub filled with tempranillo at 36 °C, combined with the cold, warm and hot pool circuit.

Europe's oldest halotherapy spa, 135 metres underground inside a 13th-century salt mine. The salt microclimate has been used against asthma and respiratory issues since the mid-19th century. Today it combines brine baths, inhalations and rest sessions under vaults carved out of salt.

Pre-Andean hot springs in Mendoza with a 'mountain spa' circuit that combines thermal waters, a volcanic mud bath and, since 2014, a malbec grape-must bath as the closing step. The crossover between classic balneotherapy and local vinotherapy.

A literal reconstruction of the Andalusian Arab baths inside buildings sitting on top of 12th-century hammams. Cold, warm and hot rooms, black soap massage and herbal tea. Not exotic exactly, but very different from a modern European spa: a historic ritual restored in detail.

In the heart of the Coffee Triangle: scrubs with freshly roasted coffee grounds, wraps with green coffee butter and immersion baths infused with specialty coffee. Paired with a single-origin coffee tasting at the end of the ritual.

The oldest spa in the Americas. The temazcal is an igloo-shaped adobe hut where red-hot volcanic stones are sprayed with water and herbs (copal, rue, rosemary). Led by a temazcalero, it combines sauna, ceremony and Mayan spiritual cleansing.