St. Martin's Cathedral in Eisenstadt was first mentioned 1264. From this chapel there are still remains of a Romanesque foundation in the area of the present choir. In the 13th century the chapel was extended by the addition of an early Gothic choir. In the 14th century a chapel for lay people was added. In 1460 the church was rebuilt under the town captain Johann Siebenhirter as a fortified or defensive church, as an attack by the Turks was expected after the Fall of Constantinople in 1453. The Gothic building was finished in 1522. After the great fire of 1589 almost 30 years passed before construction of the severely damaged church took place, between 1610 and 1629.
In 1777 a large altarpiece by Stefan Dorffmeister was added, depicting 'The Transfiguration of St. Martin'. In the following year the Viennese organ builder Malleck installed an organ to instructions from Joseph Haydn.
After the creation of the Diocese of Eisenstadt, St. Martin's Church was elevated to the rank of cathedral in 1960. Saint Martin became the patron saint of the diocese and the Land. Under Bishop Stephan László in 1960 the interior and windows were renewed.
The cathedral is famous for its church music. Concerts of the annual Haydn Festival also take place here.
References:Rosenborg Palace was built in the period 1606-34 as Christian IV’s summerhouse just outside the ramparts of Copenhagen. Christian IV was very fond of the palace and often stayed at the castle when he resided in Copenhagen, and it was here that he died in 1648. After his death, the palace passed to his son King Frederik III, who together with his queen, Sophie Amalie, carried out several types of modernisation.
The last king who used the place as a residence was Frederik IV, and around 1720, Rosenborg was abandoned in favor of Frederiksborg Palace.Through the 1700s, considerable art treasures were collected at Rosenborg Castle, among other things items from the estates of deceased royalty and from Christiansborg after the fire there in 1794.
Soon the idea of a museum arose, and that was realised in 1833, which is The Royal Danish Collection’s official year of establishment.