I went to a Sunday night ballet performance of Tchaikovsky's Sleeping Beauty in the Berlin Staatsoper. The show was amazing, but just to see the building itself is a worth the ticket price.
The Staatsoper is on Unter den Linden, one of the fanciest streets in the city. Not far from the Brandenburger Tor, it is in the heart of Berlin. The building, from the outside, looks like many of its neighbors, but becomes much more special when you enter.
You can buy or pick up tickets just inside the doors and then you enter another set of doors to go into the lobby. With lush colors and crystal chandeliers, you immediately find yourself in a most elegant setting. Although travelers seem to be accepted in grubbier clothes, many of the opera goers are dressed to the nines and this adds to the classy atmosphere.
Inside the opera house, there is a large number of seats on the floor, then there are several balconies that climb vertically. While this looks very nice, the higher levels may have limited visibility of the stage, especially on the sides. Nonetheless, the ticket prices reflect that factor, and start at very affordable levels.
The official website is in English and gives information about the performances, ticket prices, and location of the building. You can also order tickets online and pick them up at the building, or they will be mailed to you if you order more than 10 days in advance.