Choszczno () is a town in the West Pomeranian Voivodeship, in north-western Poland. As of December 2021, the town has a population of 14,831. The town is in a marshy district between the river Stobnica and Klukom lake, southeast of Stargard and on the main railway line between Szczecin and Poznań. Besides the Gothic church, there are a number of historical buildings from the 19th century industrial period namely, a gasification plant and a water pressure tower which dominates the town's skyline.

Choszczno is the administrative centre of Choszczno County.

The town was badly affected by the Second World War: 80% of its buildings were damaged or destroyed. The town was rebuilt and is now a center for local government of the Choszczno commune (). Due to its microclimate the town has become a rehabilitation center for convalescing patients. The close proximity of the lakes has made it a tourist destination for water sports. It has also become a popular destination for golf, as it is home to Modry Las, a top ranked European golf course. Other tourist attractions are 'Wodny Raj' aqua park and Drawieński National Park, located to the east near the town of Drawno.

Choszczno has a strong military tradition and is the home base for the 2nd Artillery Regiment, which is part of the 12th Mechanised Division headquartered in Szczecin.

The town's industries include: machinery, and the manufacture of clothing, animal feeds and starch.

History Early history and medieval Poland The area of modern Choszczno County was inhabited going back to at least the 5th century BC; Germanic peoples lived in the area around 1 AD, and no later than the 7th century it was settled by Slavs. A defensive gród and most likely a trading settlement was at the site of modern Choszczno.O mieście Choszczno official city website In the years 963–967 the Polish ruler Mieszko I incorporated the area into Piast Poland, though because it was on the border of Poland, towards the end of the 11th century the ties with the central authority of the Polish dukes became looser. Control of the Polish rulers over the Choszczno area was reestablished in 1122 by Bolesław III Wrymouth. After his death and the resulting Feudal fragmentation of Poland among his descendants, the region passed to the Mieszko III the Old of the Duchy of Greater Poland. Under Wrymouth, the region had been included within the Greater Polish castellanies of Drzeń (Drezdenko) and Santok, with the area around modern Choszczno belonging to the northernmost part of the latter. Thus, this area was the northwesternmost portion of the Polish state, and its history departed from that of Western Pomerania which it bordered. The castellans of Drzeń and Santok however exerted direct control only in the core areas of their castellanies, i.e., the area around the Warta and Noteć rivers, while the areas in the north were administered by a local Pomeranian tributary nobility. Quote: "Seit den Eroberungen Boleslaw Krzywoustys in der ersten Hälfte des 12. Jahrhunderts gehörte das Land zwischen Oder und Drage zum großpolnischen Herrschaftsgebiet, und zwar zu den Kastellaneien Zantoch (Santok) und Driesen (Drzen bzw. Drezdenko). Diese unterteilten sich jeweils in ein Kerngebiet um die Kastellaneiburg, das vom Kastellan selbst verwaltet und beherrscht wurde, und in weiter entfernt gelegene, aber von ihr abhängige Landschaften, die einheimischen, pomoranischen Stammes- oder Landesfürsten unterstanden, die den großpolnischen Herzögen gegenüber tributpflichtig waren. Die Bewohner des Landes waren überwiegend pomoranischer Abstammung. Die Kastellanei Zantoch umfaßte damals hauptsächlich das Warthebruch von der Burg flußabwärts bis zur Einmündung des Vietzer Fließes und in ihrer nördlichen Hälfte die beiden Landsberger Grundmoränenplatten, soweit diese schon besiedelt waren."

Through the later 12th and early 13th centuries, Greater Poland had lost control over the northern areas of the Drzeń and Santok castellanies, and the Pomeranians had stopped paying tribute.Gahlbeck (2002). p. 97–98. Quote p. 97: "Only the core areas of the castellanies Driesen and Zantoch remained with Greater Poland. At large, this political constellation remained stable throughout the late 12th and the first quarter of the 13th century." In the mid-13th century, the area was contested again, when the Silesian dukes took the Santok castellany from Greater Poland (peace with Greater Poland's Władysław Odonic in 1234) and expanded north of the Warta into Pomerania, then ruled by Barnim IZientara 2002:300ff.; Benl 1999:89 who in turn was a vassal of the Brandenburgian margraves. This was a period of abundant donations made by all participants (Barnim, Odonic and Henry) to monk orders, whom the donators expected to secure their borderlands and/or claims.Zientara 2002:301ff; Benl 1999:89 By 1250 however, Barnim had retaken most of the areas lost in the Warta and Noteć area before, and held the northern part of the former Santok and Drzeń castellanies.Benl 1999: 89; By this, he was supported by the margraves, and Zantoch itself was taken by "the Germans" (either Barnim's or more likely the margraves' men) in 1238 and much fought over thereafter (Zientara 2002:338-339). The Greater Polish duke Przemyśl formally gave up claims to the Zantoch castellany when his daughter married a Brandenburgian margrave and the castellany (w/o the fort of Zantoch) was transferred to the latter as bridal trousseau (Benl 1999:89). During the next years, the margraves expanded their New March northward at the expense of Barnim.

Hoscno, Sovin, Treben The oldest traces of settlement near modern Choszczno are the archaeological remains of a late Slavic settlement west of the modern town, near Lake Stawin, with an adjacent rampart.Gahlbeck (2002). p. 589. The rampart had also been interpreted as late Slavic, yet an archaeological survey did not yield late Slavic finds, but early German finds instead. Therefore, the rampart and the ruins inside are thought to be the remains of the Cistercian grange Sovin.With reference to other sources: Gahlbeck (2002). p. 589; ; followed e.g. by The duke of Greater Poland, Władysław Odonic, donated the Choszczno area to the Cistercian Kołbacz Abbey in 1233. While it was proposed that in this or in a 1234 document, "Hoscno" appears as the oldest written mention of Choszczno, this assertion has been refuted.For an assessment of the identification of Hoscno as oldest mention of Choszczno by Stanislaw Rospond and the spread of this identification into other reference works cf. quote: "Usiłowałem dojść źródła owej wyssanej z palca, a już rozpowszechnionej wiadomości o pojawieniu się Choszczna jako Hoscno w 1233 względnie w 1234 r.' Niestety nie udało mi się to. Informacji tej nie podaje ani Deutsches Städtebuch (1939), ani też zbiorowa praca historyków polskich Miasta polskie w tysiącleciu (t. II, 1967 r.). Faktem jest, iż obszary wokół Choszczna nadał w 1233 r. Władysław Odonic cystersom kołbackim. Samo Choszczno nie zostało jednak przy tej okazji wymienione3. Wskazywać by to wręcz mogło, iż — przynajmniej pod nazwą Choszczno — jeszcze osady tej nie było. Niektórzy przypuszczają, że najstarsze "Choszczno" znajdowało się we wzmiankowanym przez owe dokumenty Sownie."; for an assessment of the identification of Hoscno as oldest mention of Choszczno by a footnote in later editions of the Codex diplomaticus majoris Poloniæ documenta, tomus I, document nr. 160 cf. ; quote: "Choszczno po raz pierwszy występuje w dokumencie z 1269 r. pod niemiecką nazwą Arnswalde, jako miejscowość w której ten dokument wystawiono. Źródła z XIII i XIV w. nic nie wspominają o nazwie "Choszczno". Istnieje wprawdzie dokument z 1234 r., w którym wymienia się "villa Hoscno". Wydawca Kodeksu Wielkopolskiego identyfikuje ją ze starą nazwą miasta Arnswalde (dzisiejsze Choszczno). Identyfikacja ta budzi zastrzeżenie, ponieważ spór między klasztorami premonstratensów we Wrocławiu a benedyktynów w Tyńcu, który jest treścią tego dokumentu, dotyczy miejscowości leżących na Śląsku Opolskim iw Małopolsce, a nie na omawianym terenie. Zresztą, także Kętrzyński, pierwszy wydawca tego dokumentu w Kodeksie Tynieckim w uwadze zaznacza, że "Hoscno stoi zapewnie mylnie za Hosino — Osino — Osin, wieś pod Raciborzem". Wynika stąd jasno, że "villam Hoscno" z dokumentu z 1234 r. nie można utożsamiać z Choszcznem na Pomorzu." Winfried Irgang and Heinrich Appelt (eds.) (1977): Schlesisches Urkundenbuch 1231-1250, p.39 and Engelbert, Kurt (ed.) (1971): Archiv für schlesische Kirchengeschichte vol. 8, p. 48 proposed that Hoscno probably refers to the village Chosz. Since Odonic made the donation without being in actual control of the area, the Kołbacz monks asked for recognition by the Pomeranian duke Barnim I, which was granted in 1237. The Kołbacz monks then started settlement and amelioration of the grant (Ostsiedlung),; Gahlbeck (2002). p. 31. including the construction of the town of Treben northwest of Sovin, which however was abandoned soon after.

Medieval Arnswalde, Choszczno

The Brandenburgian margraves, who had established the core of the later New March at the lower Warta, took control of the area between around 1263 and 1269.Gahlbeck (2002). p. 114. The margraves' intervention was triggered by a dispute between Barnim and the Order of Saint John: Barnim, unable to pay his debts to the order, refused to hand over territories around Sovin which Albertus Magnus, at the behest of the pope, had selected for compensation. Among those who would have been affected by the transition of these territories was Ludwig von Wedel, an influential magnate who had just changed his allegiance from Barnim toward the margraves.Gahlbeck (2002). p. 113–114. It was most probably he who called the Brandenburgians for help, since they were able to prevent the hand-over through their veto as Barnim's feudal suzerains, a position, contested again and again, they held since 1231/34. While Barnim was excommunicated for his refusal, the margraves took control of the area and renounced Barnim's claim to it, the Wedel family however was assured their possessions.

In this context, the margraves founded the town of Arnswalde east of Sovin, at the site of the modern city center. The name derives from "Arn", a contracted genitive form of German Aar, an antiquated word for eagle (the margravians' heraldic beast); and "Wald(e)", also "Wold(e)", meaning woods or forest.;

This town, built between 1269 and 1289,Gahlbeck (2002). p. 590. and in the beginning populated with people from Angermünde, with reference to Brzustowicz (2003: p. 25). was first mentioned in 1269 as the site of the conclusion of the treaty of Arnswalde. The Cistercians were expelled from Sovin, and barred from returning despite multiple respective efforts. The remaining inhabitants of Sovin probably settled in Arnswalde, from where the surrounding area (terra Arnswalde) was henceforth administered. Treben lost its function as a regional central market to Arnswalde. The Arnswalde area remained contested between Barnim I and the Brandenburgian margraves, who had taken from him a large area between the Warta-Noteć line and the lower Ina rivers by 1269. Despite Barnim being married to margrave Otto III's daughter in 1267, Barnim went to war with the margraves over the Arnswalde area between 1273 and 1275.Benl (1999). p. 90. When the dispute was settled in 1278, Barnim recovered the area northwest of Arnswalde, while the town's surroundings and the areas to the south and east remained with the margraves: Arnswalde henceforth was a frontier town near the border between the duchy of Pomerania and Brandenburg's New March. After a war broke out over control of the region in 1319, the town came under control of the Duchy of Pomerania and Duke Wartislaw IV vested it with new privileges, however, by 1326 it fell to Brandenburg again.