Trento is a city located in the Adige River valley in Trentino-Alto Adige/Sudtirol in Italy. It is the capital of Trentino. In the 16th century, the city was the location of the Council of Trent. Formerly part of Austria, it was annexed by Italy in 1919. Trento is an educational, scientific, financial and political centre in Trentino-Alto Adige/Sudtirol, in Tyrol and Northern Italy in general. The University of Trento ranks highly out of Italy's top 30 colleges, coming 1st in the Italian Ministry of Education, Universities and Research ranking, 2nd according to Census ranking and 5th in the Il Sole 24 Ore ranking of Italian universities. The city contains a picturesque Medieval and Renaissance historic centre, with ancient buildings such as Trento Cathedral and the Castello del Buonconsiglio.