Esztergom is a city with county rights in northern Hungary, 46 kilometres northwest of the capital Budapest. It lies in Komárom-Esztergom County, on the right bank of the river Danube, which forms the border with Slovakia there. Esztergom was the capital of Hungary from the 10th until the mid-13th century when King Béla IV of Hungary moved the royal seat to Buda.

The Constitutional Court of Hungary is a special court of Hungary, making judicial review of the acts of the Parliament of Hungary. The official seat of the Constitutional Court is Budapest. Until 2012 the seat was Esztergom.