The Treaty of Eger was concluded on 25 April 1459 in Eger

Cheb

Cheb is a city in the Karlovy Vary Region of the Czech Republic, with about 33,000 inhabitants. It is situated on the river Ohře , at the foot of one of the spurs of the Smrčiny and near the border with Germany...

 (Cheb) (Reichspfandschaft Eger). The treaty established the border between Bohemia

Bohemia

Bohemia is a historical region in central Europe, occupying the western two-thirds of the traditional Czech Lands. It is located in the contemporary Czech Republic with its capital in Prague...

 and the Electorate of Saxony

Electorate of Saxony

The Electorate of Saxony , sometimes referred to as Upper Saxony, was a State of the Holy Roman Empire. It was established when Emperor Charles IV raised the Ascanian duchy of Saxe-Wittenberg to the status of an Electorate by the Golden Bull of 1356...

 on the heights of the Ore Mountains

Ore Mountains

The Ore Mountains in Central Europe have formed a natural border between Saxony and Bohemia for many centuries. Today, the border between Germany and the Czech Republic runs just north of the main crest of the mountain range...

 and the middle of the River Elbe. This border remains largely unchanged today. It is thus one of the oldest still extant borders in Europe

Europe

Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

.

At that time, Elector Frederick

Frederick II of Saxony

Frederick II of Saxony may refer to:*Frederick II, Elector of Saxony, Elector of Saxony between 1428 and 1464*Frederick Augustus II of Saxony, king of Saxony between 1836 and 1854...

 and Duke William of Saxony agreed with the King of Bohemia, George of Poděbrady

George of Podebrady

George of Kunštát and Poděbrady , also known as Poděbrad or Podiebrad , was King of Bohemia...

, that towns, castles, markets and villages that were in crown estate of Bohemia on one side of the forest (Brüx

Most

Most is the capital city of the Most District, situated between the Czech Central Mountains and the Ore Mountains, approximately northwest of Prague along the Bílina River and southwest of Ústí nad Labem.-Etymology:...

 (now Most), Riesenburg Castle (now Rýzmburk Castle) and Dux

Duchcov

Duchcov is a town in the Teplice District in the Ústí nad Labem Region of the Czech Republic. It has a population exceeding 9,000 and is located at the foot of the Ore Mountains....

 (now Duchcov) together with all spiritual and secular bodies, pensions, interest, duties, etc.), belonged to Bohemia, whilst those estates and castles located the other side of the forest in Thuringia

Thuringia

The Free State of Thuringia is a state of Germany, located in the central part of the country.It has an area of and 2.29 million inhabitants, making it the sixth smallest by area and the fifth smallest by population of Germany's sixteen states....

 in the Vogtland

Vogtland

The term Vogtland refers to a region reaching across the German free states of Bavaria, Saxony and Thuringia and into the Czech Republic . The name of the region contains a reference to the former leadership by the Vögte of Weida, Gera and Plauen, which translates approximately to advocates or lord...

 and in Meissen

Meissen

Meissen is a town of approximately 30,000 about northwest of Dresden on both banks of the Elbe river in the Free State of Saxony, in eastern Germany. Meissen is the home of Meissen porcelain, the Albrechtsburg castle, the Gothic Meissen Cathedral and the Meissen Frauenkirche...

 should be left with the Saxon dukes. Through this agreement, the border disputes that were constantly occurring were ended forever. That said, some places and dominions north of the Ore Mountains and the Vogtland continued to be fiefdoms of the Bohemian crown.

The most significant change to the borders fixed by this treaty happened in 1546, when Duke Moritz and King Ferdinand

Ferdinand I, Holy Roman Emperor

Ferdinand I was Holy Roman Emperor from 1558 and king of Bohemia and Hungary from 1526 until his death. Before his accession, he ruled the Austrian hereditary lands of the Habsburgs in the name of his elder brother, Charles V, Holy Roman Emperor.The key events during his reign were the contest...

 divided the Barony of Schwarzenberg

Barony of Schwarzenberg

The Barony of Schwarzenberg was a domain that emerged in the middle of the 12th century in the Saxon Ore Mountains in central Europe. It continued to exist following its acquisition by John Frederick the Magnanimous in 1533 as an administrative unit of the Electorate of Saxony under the name of...

 as part of the spoils of war following the Schmalkaldic War

Schmalkaldic War

The Schmalkaldic War refers to the short period of violence from 1546 until 1547 between the forces of Emperor Charles I of Spain and V of the Holy Roman Empire, commanded by Don Fernando Álvarez de Toledo, Duke of Alba, and the Lutheran Schmalkaldic League within the domains of the Holy Roman...

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