Wolf's Lair (Wolfsschanze) was Adolf Hitler's first Eastern Front military headquarters in World War II. The complex, which would become one of several Führer Headquarters located in various parts of occupied Europe, was built for the start of Operation Barbarossa - the invasion of the Soviet Union - in 1941. It was constructed by Organisation Todt.
The top secret, high security site was in the Masurian woods about 8 km from the small East Prussian town of Rastenburg (now Kętrzyn). Three security zones surrounded the central complex where the Führer's bunker was located. These were guarded by personnel from the SS Reichssicherheitsdienst and the Wehrmacht's armoured Führer Begleit Brigade. Despite the security, an assassination attempt against Hitler was made at Wolf's Lair on 20 July 1944.
Hitler first arrived at the headquarters on 23 June 1941. In total, he spent more than 800 days at the Wolfsschanze during a 3½-year period until his final departure on 20 November 1944. In the summer of 1944, work began to enlarge and reinforce many of the Wolf's Lair original buildings, however the work was never completed because of the rapid advance of the Red Army during the Baltic Offensive in autumn 1944. On 25 January 1945, the complex was blown up and abandoned 48 hours before the arrival of Soviet forces. The Red Army captured the abandoned remains of the Wolfsschanze on 27 January without firing a shot. It took until 1955 to clear over 54,000 land mines which surrounded the installation. Today only impressive concrete ruins exist.
The Church of Our Lady before Týn is a dominant feature of the Old Town of Prague and has been the main church of this part of the city since the 14th century. The church's towers are 80 m high and topped by four small spires.
In the 11th century, this area was occupied by a Romanesque church, which was built there for foreign merchants coming to the nearby Týn Courtyard. Later it was replaced by an early Gothic Church of Our Lady before Týn in 1256. Construction of the present church began in the 14th century in the late Gothic style under the influence of Matthias of Arras and later Peter Parler. By the beginning of the 15th century, construction was almost complete; only the towers, the gable and roof were missing. The church was controlled by Hussites for two centuries, including John of Rokycan, future archbishop of Prague, who became the church's vicar in 1427. The roof was completed in the 1450s, while the gable and northern tower were completed shortly thereafter during the reign of George of Poděbrady (1453–1471). His sculpture was placed on the gable, below a huge golden chalice, the symbol of the Hussites. The southern tower was not completed until 1511, under architect Matěj Rejsek.
After the lost Battle of White Mountain (1620) began the era of harsh recatholicisation (part of the Counter-Reformation). Consequently, the sculptures of 'heretic king' George of Poděbrady and the chalice were removed in 1626 and replaced by a sculpture of the Virgin Mary, with a giant halo made from by melting down the chalice. In 1679 the church was struck by lightning, and the subsequent fire heavily damaged the old vault, which was later replaced by a lower baroque vault.
Renovation works carried out in 1876–1895 were later reversed during extensive exterior renovation works in the years 1973–1995. Interior renovation is still in progress.
The northern portal is a wonderful example of Gothic sculpture from the Parler workshop, with a relief depicting the Crucifixion. The main entrance is located on the church's western face, through a narrow passage between the houses in front of the church.
The early baroque altarpiece has paintings by Karel Škréta from around 1649. The oldest pipe organ in Prague stands inside this church. The organ was built in 1673 by Heinrich Mundt and is one of the most representative 17th-century organs in Europe.