The history of Budapest is the history of three cities: Obuda, “old Buda”, Buda the high city found on the banks of the left bank, and Pest, found on the right bank.

The history of Budapest begins with the oldest city, Obuda, occupied by Celtic tribes until the conquest of the Romans in the 1st century BC. Obuda, which the Romans called “Aquincum”, was founded in the year 89 on an ancient Celtic settlement. For four centuries it was the capital of the Roman region of Pannonia. Aquincum comes from the word “aqua” (with water), in honor of the numerous thermal springs that Budapest is so famous for.

Buda was born as a Roman colony and its foundation was established around 14 BC.

In 896, seven Magyars tribes came together and defeated the Romans. They conquered the area and settled in Aquincum. Centuries later, in the thirteenth century, the settlement was called Óbuda and two separate cities began to develop on either side of the Danube River.

Hungary was established in 1000 AD as a Catholic Apostolic Kingdom with the coronation of the country’s first King, Stephen I of Hungary. In 1222, King Andrew II of Hungary issued the Golden Bull of 1222, the country’s first constitution.

In 1241, the Mongols invaded the area and both cities were completely destroyed. King Bélv IV of Hungary commissioned both towns to be rebuilt and during this period, Buda was founded opposite Óbuda.

Buda became the capital of the Kingdom of Hungary in 1361 and between the fourteenth and fifteenth century, the city developed greatly, decreasing after the reign of Matthias Corvinus, King of Hungary and Croatia.

Pest was conquered by the Ottoman Empire in 1526, followed years later by the siege of Buda in 1541. Buda was made capital of the Budin province during the Ottoman rule, while Pest declined and was practically abandoned. The Turks remained in power until 1686, year in which they were defeated by the Habsburg and Buda became part of the Habsburg dominion.

During the Habsburg rule, both cities began to develop again and many churches and landmarks were built during this period. In 1784, Joseph II established the Institutum Geometricum as part of the Faculty of Liberal Arts at the University of Buda. Count Széchenyi led a movement of progress in both cities and in 1849, the first permanent bridge was constructed connecting Buda and Pest. It is known as the Chain Bridge.

Unification of Óbuda, Buda and Pest

Óbuda, Buda and Pest were unified into one single city in 1873, naming the city Budapest. After Vienna, it became the second main city in the Austro-Hungarian Empire.

After World War I, the Allies and the Republic of German-Austria signed the treaty of Saint-Germain-en-Laye. ….

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Source: introducingbudapest.com