Vienna is 414.78 km² holding 2,028,499 people, and almost everything a visitor comes for sits inside a single ring road less than a kilometre across.
The Innere Stadt — the 1st district — is the medieval core, and the Ringstrasse that surrounds it was built in the second half of the nineteenth century on the line of the demolished bastions. The 371-hectare historic centre has been a UNESCO World Heritage Site since 2001; it was on the endangered list from 2017 to 2026.
The wider urban area holds 2,223,236 people and the metropolitan area 2,890,577, which makes Vienna the tenth largest city in Europe and by a long way the largest in Austria.
Checked 2026-08-23