Saalfeld

In 1389 the town finally was acquired by Landgrave Balthasar of Thuringia, a member of the House of Wettin.[3] Saalfeld's economy prospered from surrounding mines, transport on the Saale River as well as from fishing (expressed by the barbels in the town's coat of arms). The Wettin rulers had the Gothic Saint John hall church erected at the site of a Romanesque predecessor building until 1514. The Gothic town hall was completed in 1537. The ruling dynasty reached its height of importance, when in 1423 all Wettin lands including the Thuringian estates were incorporated into the Electorate of Saxony (Upper Saxony).

However, already in 1485 Elector Ernest of Saxony agreed on the Leipzig partition with his younger brother Duke Albert III. Ernest retained the southern Thuringian estates with Saalfeld; his grandson John Frederick I lost the electoral dignity in the 1547 Capitulation of Wittenberg ending the Schmalkaldic War, along with all his possessions outside of Thuringia. Confirmed by Emperor Maximilian II at the 1570 Diet of Speyer, John Frederick's Ernestine descendants only retained the duchies of Saxe-Weimar and (from 1572) Saxe-Coburg-Eisenach. Upon the death of Duke Frederick William I of Saxe-Weimar in 1602, Saalfeld passed to the newly established Duchy of Saxe-Altenburg, from 1673 Saxe-Gotha-Altenburg.

Saalfeld Castle

After several blazes in the early 16th century, Saalfeld had been rebuilt in a lavish Renaissance style. In 1675 Duke Albert V of Saxe-Coburg upon his accession chose the town as his residence and from 1677 onwards had Saalfeld Castle erected on the site of the destroyed Benedictine abbey, which in 1680 fell to his younger brother John Ernest IV. After Albert's death in 1699, John Ernest also claimed Saxe-Coburg and called himself a duke of Saxe-Coburg-Saalfeld.

The Castle, which has been renovated and is today the town administrative building, was home to four generations of the Saxe-Coburg-Saalfeld branch. Until 1825, Saalfeld remained one of two capitals of the duchy, together with Coburg, its Franconian sister town to the south. The 4th Duke Ernest Frederick (1724–1800) was the last to be born in Saalfeld; in 1764, he moved the capital from Saalfeld to Coburg, where in 1805 his son and heir Duke Francis (1750–1806) would buy Rosenau Castle as his residence.

Francis' children were linked to many of Europe's royal families: His daughter Princess Victoria of Saxe-Coburg-Saalfeld (1786–1861) by her marriage with Prince Edward became the mother of Queen Victoria. Her brother Duke Ernest III of Saxe-Coburg-Saalfeld (1784–1844) was the father of Queen Victoria's husband, Prince Consort Albert. This line continues unbroken from Queen Victoria through to Queen Elizabeth II today. At about the same period, their brother Duke Leopold of Saxe-Coburg-Saalfeld (1790–1865) became the ancestor of the royal House of Belgium in 1831, while their sister Princess Juliane of Saxe-Coburg-Saalfeld (1781–1860) married Grand Duke Constantine Pavlovich of Russia. Other descendants of Duke Francis include Wilhelm II, German Emperor, Alexandra, Empress consort of Russia, Victoria, Queen consort of Spain, Ferdinand II, King consort of Portugal, Carlota, Empress consort of Mexico, Ferdinand I, King of Bulgaria, Sofía, Queen consort of Spain, Princess of Greece and Denmark, Maud, Queen consort of Norway, and Marie, Queen consort of Romania.

During the time of Duke Ernest III in 1826, the neighbouring ducal line of Saxe-Gotha and Altenburg became extinct. Ernest received the former Saxe-Gotha but in exchange had to give up Saalfeld in favour of his Ernestine cousin Duke Bernhard II of Saxe-Meiningen.

On 10 October 1806 a united Prussian and Saxon contingent met with a corps of the French Grande Armée under Marshall Jean Lannes at the Battle of Saalfeld, whereby Prince Louis Ferdinand of Prussia was killed.[3] The opening of the Leipzig-Probstzella railway further boosted the town's development. After World War I and the German Revolution of 1918–1919, Saalfeld became part of the newly established Free State of Thuringia. As a railway junction and garrison town of the Wehrmacht armed forces from 1936, it was strongly affected by strategic bombing during World War II.

Upon the post-World War II division of Germany, Saalfeld was an Inner-German border station on the Saal Railway—one of two routes that could be taken by trains between Leipzig/Halle and Nuremberg. As a border station its steam locomotive shed assumed extra importance as Saalfeld essentially became the southern terminus of GDR train services. Due to the continued use of steam locomotives in East Germany after the end of steam working in West Germany, the area became a mecca for railway enthusiasts for some years. However, despite being very close to the Inner German border to the south, it was only accessible by a very roundabout route.

In July 2018 the former municipalities of Saalfelder Höhe and Wittgendorf were merged into Saalfeld. The former municipalities Reichmannsdorf and Schmiedefeld were merged into Saalfeld in January 2019.