La Scala

La Scala - Teatro alla Scala - is one of the most famous and important opera houses in the world.

An excerpt from the article 15 facts about La Scala

It is located in Milan, Italy, in the Piazza della Scala, the square from which it took its name. The piazza, in turn, took its name from the church of Santa Maria della Scala, which was built here in 1381 and named after its donor, Princess Beatrice Regina della Scala, wife of Duke Bernabo Visconti, ruler of Milan.