The 1st District of Budapest is the Castle District ( or ) and is the historical part of the Buda side of Budapest. It consists of the Buda Castle Hill and some other neighborhoods around it, such as Tabán, Krisztinaváros and parts of Gellért Hill.
The Castle District is situated on the banks of the Danube, in the Buda side.
Neighbour districts of District I are (south to north):
The current mayor of I. District of Budapest is Márta V. Naszályi (Dialogue).
The District Assembly, elected at the 2019 local government elections, is made up of 15 members (1 Mayor, 10 Individual constituencies MEPs and 4 Compensation List MEPs) divided into this political parties and alliances:
Várkerület is twinned with: