Staatsoper Unter den Linden

The Staatsoper Unter den Linden, also known as the Linden Opera, is the historically most important opera house in Berlin. It was built between 1741 and 1743 on behalf of the Prussian King Friedrich II by the architect von Knobelsdorff. The house is since its inauguration 1742 home of the Staatskapelle Berlin.

Berlin State Opera
The Staatsoper Unter den Linden or Berlin State Opera is an opera house on the boulevard Unter den Linden 7 in the Mitte district of Berlin and is part of the Forum Fridericianum. Built in 1741-1743 by order of Frederick the Great according to plans by Georg Wenzeslau von Knobelsdorff in the style of Frederician Rococo, it was rebuilt by Richard Paulick in 1951-1955 after being destroyed in World War II. It is the oldest opera house in Berlin and the "first major theater ever to be built as a monumental, free-standing structure in a city".The State Opera forms the Berlin Opera Foundation with the Deutsche Oper, the Komische Oper, the Staatsballett and the stage service.
Text/Source: Wikipedia
de.wikipedia.org/wiki/Staatsoper_Unter_den_Linden

Built between 1741 and 1743 by Georg Wenzeslaus von Knobelsdorff in the classicist style for Friedrich the 2nd as part of the Forum Fridericianum. It is the first significant theater ever to be built as a monumental, free-standing building in a city and was therefore an expression of the ideas of the Enlightenment.

The Schauspielhaus (from 1821: Königliches Schauspielhaus, from 1919: Prussian State Theater, since 1984: Konzerthaus Berlin) is a monument on the Gendarmenmarkt in the Berlin district of Mitte.
Built between 1818 and 1821 by Karl Friedrich Schinkel, it is one of the main works of German classicism.
Burned out in the Second World War, it was restored from 1976 to 1984 true to the original and inside in a historicizing form as a concert hall.(Source: Wkipedia)

I can only recommend a tour of discovery through the Staatsoper Unter den Linden (costs 15 euros, 1 1/2 hours). Here you not only get 275 years of rich history of the house, but also a look behind the scenes.

There are really beautiful operas to see here. Practical: the multi-storey car park is then available during the performance at a reduced opera tariff.

The Staatsoper Unter den Linden is located opposite the Humboldt University.

Nice old building with a forecourt.