A graduation tower (occasionally referred to as a thorn house [1] ) is a structure, used in the production of salt, that removes water from a saline solution by evaporation, increasing its concentration of mineral salts. The tower consists of a wooden wall-like frame stuffed with bundles of brushwood (typically blackthorn) that have to be changed every five to ten years, as they become encrusted with mineral deposits over time. [2] The salt water runs down the tower and partly evaporates. At the same time, some minerals from the solution are left behind on the brushwood twigs.
Graduation towers can be found in a number of spa towns, primarily in Germany but also Poland and Austria. The mineral-rich water droplets in the air are regarded[ by whom? ] as having beneficial health effects similar to that of breathing in sea air.[ citation needed ]
A large complex of graduation towers is located in Ciechocinek and Inowrocław, Poland. [2] This entirely wooden construction in Ciechocinek was erected in the 19th century by Stanisław Staszic. The complex consists of three towers, with a total length of over 2 km. Many tourists visit it for health reasons.[ citation needed ]
With years of initial construction where available. Does not include modern indoor facilities found in some spas.
Brine is water with a high-concentration solution of salt. In diverse contexts, brine may refer to the salt solutions ranging from about 3.5% up to about 26%. Brine forms naturally due to evaporation of ground saline water but it is also generated in the mining of sodium chloride. Brine is used for food processing and cooking, for de-icing of roads and other structures, and in a number of technological processes. It is also a by-product of many industrial processes, such as desalination, so it requires wastewater treatment for proper disposal or further utilization.
Jastrzębie-Zdrój is a city in south Poland with 86,632 inhabitants (2021). Its name comes from the Polish words jastrząb ("hawk") and zdrój.
A spa town is a resort town based on a mineral spa. Patrons visit spas to "take the waters" for their purported health benefits.
Poland is a part of the global tourism market with constantly increasing number of visitors. Tourism in Poland contributes to the country's overall economy. The most popular cities are Kraków, Warsaw, Wrocław, Gdańsk, Poznań, Szczecin, Lublin, Toruń, Zakopane, the Salt Mine in Wieliczka and the historic site of Auschwitz – a German Nazi concentration camp in Oświęcim. The best recreational destinations include Poland's Masurian Lake District, Baltic Sea coast, Tatra Mountains, Sudetes and Białowieża Forest. Poland's main tourist offers consist of sightseeing within cities, historical monuments, natural monuments, business trips, agrotourism, bicycle touring, qualified tourism, mountain hiking (trekking) and climbing among others.
Salt, also referred to as table salt or by its chemical formula NaCl, is an ionic compound made of sodium and chloride ions. All life depends on its chemical properties to survive. It has been used by humans for thousands of years, from food preservation to seasoning. Salt's ability to preserve food was a founding contributor to the development of civilization. It helped eliminate dependence on seasonal availability of food, and made it possible to transport food over large distances. However, salt was often difficult to obtain, so it was a highly valued trade item, and was considered a form of currency by certain people. Many salt roads, such as the Via Salaria in Italy, had been established by the Bronze Age.
Duszniki-Zdrój, often simplified to Duszniki, is a spa town in Kłodzko Valley and Kłodzko County, Lower Silesian Voivodeship, in southwestern Poland. As of December 2021, the town has a population of 4,329. Situated on the Bystrzyca River, it attracts tourists from Poland and around the world.
Bad Oeynhausen is a spa town on the southern edge of the Wiehengebirge in the district of Minden-Lübbecke in the East-Westphalia-Lippe region of North Rhine-Westphalia, Germany. The closest larger towns are Bielefeld and Hanover.
Bad Reichenhall is a spa town, and administrative center of the Berchtesgadener Land district in Upper Bavaria, Germany. It is located near Salzburg in a basin encircled by the Chiemgau Alps. Together with other alpine towns Bad Reichenhall engages in the Alpine Town of the Year Association for the implementation of the Alpine Convention to achieve sustainable development in the alpine arc. Bad Reichenhall was awarded Alpine Town of the Year in 2001.
Polanica-Zdrój is a spa town in Kłodzko County, Lower Silesian Voivodeship, in south-western Poland. It lies approximately 11 kilometres (7 mi) south-west of Kłodzko, and 89 kilometres (55 mi) south-west of the regional capital, Wrocław. As at 2021, the town has a population of 6110.
Kudowa-Zdrój, or simply Kudowa, is a town located below the Table Mountains in Kłodzko County, Lower Silesian Voivodeship, in the southwestern part of Poland. It has a population of around 10,000 and is located at the Polish-Czech border, just across from the Czech town of Náchod, some 40 km (25 mi) west of Polish Kłodzko and 140 km (87 mi) from Prague.
Bad Münster am Stein-Ebernburg is a spa town of about 4,000 inhabitants in the Bad Kreuznach district in Rhineland-Palatinate, Germany. Since 1 July 2014, it is part of the town Bad Kreuznach. It was the seat of the former like-named Verbandsgemeinde, but not part of it. Bad Münster am Stein-Ebernburg was granted town rights on 29 April 1978 and is recognized as a mineral spring spa (Mineralheilbad) and a climatic spa. Today the "Spa" is famous for its clinics specializing in cardiological and orthopaedic rehabilitation. The many graduation towers form the largest open air inhalatorium in Europe.
Bad Soden-Salmünster is a town in the Main-Kinzig district, in Hesse, Germany. It is situated on the river Kinzig, between Fulda and Hanau. It has a population of around 13,000.
Busko-Zdrój ( ) is a spa town in Świętokrzyskie Voivodeship, southern Poland. It is the capital of Busko County. As of December 2021, it has a population of 15,310.
Ciechocinek is a spa town in Kuyavian-Pomeranian Voivodeship, north-central Poland, located on the Vistula River about 10 kilometres (6.2 mi) east of Aleksandrów Kujawski and 20 kilometres (12 mi) south-east of the city of Toruń. It is located within the historic region of Kuyavia. As of December 2021, the town has a population of 10,442.
Morshyn is a small city located at the Eastern Carpathian Foothills within Ukraine's Stryi Raion, Lviv Oblast (region). It hosts the administration of Morshyn urban hromada, one of the hromadas of Ukraine. The population is 5,562.
Świeradów-Zdrój is a spa town in Lubań County, Lower Silesian Voivodeship, in south-western Poland near the border with the Czech Republic. The town is located in the Kwisa valley of the Jizera Mountains, a part of the Sudetes range. It lies approximately 25 kilometres (16 mi) south of Lubań, and 123 kilometres (76 mi) west of the regional capital Wrocław.
Mineral spas are spa resorts developed around naturally occurring mineral springs. Like seaside resorts, they are mainly used recreationally although they also figured prominently in prescientific medicine.
Solec-Zdrój is a village in Busko County, Świętokrzyskie Voivodeship, in south-central Poland. It is the seat of the gmina called Gmina Solec-Zdrój. It lies on the Rzoska river in historic Lesser Poland, approximately 17 kilometres (11 mi) south-east of Busko-Zdrój and 61 km (38 mi) south of the regional capital Kielce. Until 1974, its official name was Solec.
Bad Salzelmen has been a district of Schönebeck (Elbe) since 1932 and is a state-approved spa in the Salzlandkreis in Saxony-Anhalt, Germany. It was founded in 1894 when the towns of Groß Salze and Elmen merged to form the town of Groß Salze. The town of Groß Salze was renamed Bad Salzelmen in 1926.
The Ciechocinek graduation towers are a complex of three brine graduation towers, erected in the nineteenth century in Ciechocinek, in the Kuyavian-Pomeranian Voivodeship, Poland. They constitute the largest wooden structure of this type in Europe. The complex of graduation towers and salt breweries, together with two surrounding parks, are designated as a Historic Monument.
Media related to Graduation towers at Wikimedia Commons