The Church of the Holy Trinity, since February 2008 Holy Trinity Cathedral, was built around 1400. The Žilina castle is assumed to be already there as early as the 13th century, of which there are documents from 1318 to 1454. It was originally consecrated to Mary, but in the 16th century it was reconsecrated as the Church of the Holy Trinity. The chapel of John of Nepomuk was added in 1762. The church burned down three times, in 1678, 1848 and partly in 1886. The three naves of the church were originally in Gothic style, but after a reconstruction it was styled to Renaissance style. The last major reconstruction of the church was done in 1942.
The main altarpiece in the main altar depicts the Holy Trinity, the side altars depict Immaculate Conception and the Crucifix, and near the entrance there is a picture of Saint Anne. In the compounds of the church stands separate Burian's Tower, built in the first half of the 16th century. The tower offers a good view of the preserved medieval part of the town.
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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.