Salzburg is the fourth-largest city in the country. In 2020, it had 156,872 people.
In Roman times, Iuvavum was a town. The town is on the site of the Roman settlement. When Salzburg was founded in 696, it was an episcopal see. In 798, it was made a seat of the archbishop, and it was called Salzburg. Salt extraction, trade, and gold mining were the main ways it made money, but it also had a lot of other ways to make money. Because it is one of Europe's largest mediaeval forts, the fortress of Hohensalzburg was built around 1100. As part of the Counter-Reformation, many monasteries and Baroque churches were built in Salzburg in the 17th century.
As a city, Salzburg is known for its Baroque-style architecture and for being one of the best-preserved city centres north of the Alps. People from UNESCO named the historic centre one of their world heritage sites in 1996, which is when they did it. The city has three universities and a lot of people who go to school there. Tourists also go to Salzburg to see the old city and the beautiful scenery of the Alps. Wolfgang Amadeus Mozart was born in Salzburg, and he is one of the best composers of all time, according to many people.