The Burgtheater is the Austrian National Theater in Vienna and one of the most important German language theaters in the world. It is located on the Ringstraße in front of the Rathaus. After the Comédie Francaise, the Burgtheater is Europe’s  second oldest theater. Today, the Burgtheater complete with its three affiliated venues – the Akademietheater, Kasino and Vestibül – and a permanent ensemble of more than 80 actors and actresses, is one  of the largest theaters in Europe. Every season, the Burgtheater and its  affiliated venues welcome approximately 400,000 theatergoers to some  800 performances.
On  14th March 1741, the theater manager Joseph Selliers was authorized by  Empress Maria Theresia to let a vacant banqueting hall next to the  Hofburg palace to theatrical companies. In 1776 the Teutsches  Nationaltheater, as it was then called, was placed under court  administration by royal decree by Maria Theresia’s son Joseph II. This  marked the beginning of the heyday of German-language theater in Vienna. In 1794, the theater was renamed K.K. Hoftheater nächst der Burg. After  130 years of operation, the company’s new theater building, designed by  Gottfried Semper and Karl Hasenauer, opened on the Ringstraße  boulevard on 14th October 1888, after fourteen years of construction.  The Burgtheater was the last link in the chain of sumptuous structures  built around the Ringstraße, and its magnificent façade has made it one  of Vienna’s popular tourist attractions.
During the last days of the Second World War, the  Burgtheater was extensively damaged by a bombing raid and a fire of  unknown origin, and the company took up temporary residence at the  Etablissement Ronacher, a variety theater. In 1955 the company returned  to its home on the Ringstraße which had been restored to its former  glory and equipped with up-to-date technology.
The stage of the Burgtheater is one of the biggest theater stages in the  world. The stage portal is 12m wide, the main stage is 28,5m wide, 23m  deep and 28m high. At the opening in 1888 the stage technology was  already innovatory and has been modernized on many occasions. During the  reconstruction after World War II, which was accomplished in 1955, a  stage equipment was installed that is still revolutionary today. The  revolving stage consists of a rotating cylinder (15m high, 21m diameter)  and four hydraulic lifts (12 x 4 m each). With the help of this  technical features the scenery can be changed within 40 seconds. It is  the biggest automatic and computer controlled stage system in Europe. The Burgtheater auditorium holds 1175 seats, it has standing room for 84 visitors and 12 places for disabled visitors.
Apart from the stage-art the Burgtheater plays an important part in  architecture and interior design of the 19th century in Vienna. The  magnificent decoration, especially the two imperial staircases painted  by Gustav Klimt, his brother Ernst Klimt and their companion Franz  Matsch as well as the main foyer and the many statues, busts and  paintings of famous writers and actors can be visited during  daily  guided tour. 
Akademietheater
Designed by the architects Fellner & Hellmer and Ludwig Baumann and  built between 1911 and 1913, the Akademietheater has been the  Burgtheater’s second venue since 1922. After many years of requests from  ensemble members of the Burgtheater who wanted a second stage of more  intimate dimensions, Max Paulsen succeeded in affiliating the “Theatre  of the Academy of Music and the Performing Arts”, for brevity 's sake  called Akademietheater, to the Burgtheater as a smaller, second venue.  It was inaugurated on September 1922, with a performance of Goethe’s  Iphigenia in Tauris.
Kasino am Schwarzenbergplatz
The Kasino at Schwarzenbergplatz became affiliated as a venue to the  Burgtheater in the early 1980s. It was built in 1869 to serve as a  residence for the Archduke Ludwig Viktor, youngest brother of the  Emperor Franz Joseph. In 1910, Ludwig Viktor offered the building to the  “Military Studies and Casino Association”. Today, the Burgtheater makes  use of the Kasino’s unorthodox stage layout for special productions and  projects.
Vestibül at the Burgtheater
The Burgtheater’s smallest venue, the Vestibül, originally designed as  an access point for the carriages of the nobility, is situated under the  left-hand grand staircase of the Burgtheater. Considered as the  Burgtheater’s studio stage, the Vestibül offers a unique and compact  setting for unusual theatrical projects.
Text Source: burgtheater.at