The Holy Trinity Cathedral is a Bulgarian Orthodox cathedral in the city of Ruse on the Danube river. It stands next to the modern day opera house. Built beneath the ground in 1632, it is the oldest church in the city and was constructed during the period of Ottoman occupation. As it keeps the holy relics of a number of saints, Ruse's cathedral is often visited by pilgrims. Its rich history and underground interior also pose an interest for tourists, making it one of the main attractions of the city.
It is a three-nave pseudo-basilica that is 31.20 m long and 15.60 m wide. Two rows of seven columns separate the naves. It was dug four and a half meters below the level of the yard due to the requirements of Ottoman authorities. The remains of catacombs, possibly dating back to the fifth century, are located in the southwest corner of the temple. During Ottoman rule, it was easier to issue permission for the construction of a new church at the location of an older temple. The Christians of Ruse presumably used the old catacomb to build the church.
The hexagonal belfry is 19 m high and was built with stones from the fortification facilities around the Ruschuk fortress, demolished by decision of the Berlin Congress from July 1878. There are five bells in the belfry. In the cathedral's narthex are the graves of four bishops of the Dorostolo-Cherven diocese: Grigoriy, Valisiy, Mihail, and Sofroniy.
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.