Budapest, including the Banks of the Danube, the Buda Castle Quarter and Andrássy Avenue, holds a number of influential constructions from the Middle Ages to the late 19th century.

The Budapest World Heritage Site consists of three parts:
1. Buda Castle Quarter
This holds the city's medieval sites, with Buda Castle. Also there are the remains of the original Roman town Aquincum.

2. Banks of the Danube
This includes the Parliament (1884-1904) and the suspension bridge (1849).

3. Andrássy Avenue
The extension with Andrássy Avenue in the year 2000 included the Opera, Millennium Park and the Underground Railway.