Spa (; ) is a city and municipality of Wallonia in the province of Liège, Belgium, whose name became an eponym for mineral baths with supposed curative properties. It is in a valley in the Ardennes mountains south-east of Liège and south-west of Aachen. In 2006, Spa had a population of 10,543 and an area of , giving a population density of .

Spa is one of Belgium's most popular tourist destinations, being renowned for its natural mineral springs, and production of "Spa" mineral water, which is exported worldwide. The motor-racing Circuit de Spa-Francorchamps, just south of the nearby village of Francorchamps, also hosts the annual Formula One Belgian Grand Prix and various endurance races such as the 24 Hours of Spa. The world's first beauty pageant, the Concours de Beauté, was held in Spa on 19 September 1888. The town also hosted the Tour de France on 5 July 2010, when stage 2 of the race ended there.

Spa, Belgium

In 2021, Spa became part of the transnational UNESCO World Heritage Site the Great Spa Towns of Europe, for its famous mineral springs and architectural testimony to the rise of European bathing culture in the 18th and 19th centuries.

Spa, Belgium

Geography and geology

Many of the famous mineral springs in Spa are located on a hillside south of the town. In total, there are more than 300 cold mineral springs in Spa and its surroundings, classified into two types: light mineral waters and natural sparkling waters (called 'pouhons' locally). The light mineral waters come from recent rainfall on the Malchamps Moor, roughly south-west of the town and are filtered through layers of peat, quartz, and phyllite. In contrast, the pouhon waters come from rainfall that may be decades old, having percolated through calcareous rocks hundreds of meters underground.

Spa, Belgium

History

Pre-20th century

As the site of cold springs with alleged healing properties, Spa has been frequented as a "water-taking" place since classical antiquity. Pliny the Elder (died 79 CE) noted, "In Tongrie, country of Gaul, there is a famous source, whose water, while sparkling bubbles, a ferruginous taste that is, however, feel that when we finished drinking. This water purges the body, cures fevers and dispels calculous affections." (C lib. XXXI VIII) The term Spa has since become eponymous with any place having a natural water source that is believed to possess special health-giving properties, known as a spa.

The spa town grew in the Middle Ages, in the oldest iron and steel centre of Liège Province. The ban Spa was created around 1335 and included two urban concentrations: vilhe of Creppe and vilhe Spas, away. Prior to the exploitation of mineral water, the steel industry developed communication lines, which made it possible to develop the spa town.

As early as 1547, Agustino, physician to the King of England, Henry VIII, stayed at Spa and helped give knowledge to the world of the value of the Spa water. In 1559, Gilbert Lymborh wrote of "acid fountains of the Ardennes forest and primarily those located in Spa". It was translated into Latin, Italian and Spanish. In July 1565, the gentry of the provinces met in Spa under the pretext of taking the waters. At the hotel "Aux Armes of England", those present agreed to oppose the edicts of Philip II as austere and intolerant; this led to the historic 1566 "Compromise of Nobles".

In 1654, the exiled pretender to the English throne, Prince Charles, stayed at Spa, which made the place even more famous. A postal system between Spa and the outside world was established in 1699.

Since the 18th century, casinos have been located in the town.

20th century

In 1918, the German Army established its principal headquarters in Spa, and from there the delegates set out for the French lines to meet Marshal Foch and to sue for peace in the consultations leading up to the Armistice which ended the First World War.

During World War I, Spa operated as an important German convalescent hospital town between 1914 and 1917. The general headquarters of Kaiser Wilhelm II was, in 1918, the last place where he resided before his abdication due to the German surrender. In July 1920, the town hosted the Spa Conference, a meeting of the Supreme Council. German delegates were invited to this to discuss war reparations.

The Circuit de Spa-Francorchamps was established in 1921, in the vicinity of Spa. Despite its name, the racetrack has never been located within Spa: it is instead in the nearby town of Stavelot.

World War II saw Spa reoccupied by the Germans, but the town escaped the Battle of the Bulge in 1945 that stopped, luckily for Spa, just at its gates.