When workers last year began digging up Michaeler Platz, as part of a minor reconstruction project, they found Roman ruins. This is but one reminder of Vienna's ancient history.

1st century BC: Roman soldiers build a military camp they call "Vindobona'.

1278: Hapsburg rule begins.

1700s: Haydn, Mozart, Beethoven, Schubert live in city.

Late 1800s: Ringstrasse boulevard created.

1918: Collapse of Hapsburg dynasty and Austro-Hungarian Empire.

1938: Adolf Hitler enters triumphantly on March 15.

1945: Vienna divided by allies until 1955, when Austria is united as neutral state.

1980s: City launches Danube cleanup.

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