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:The ancient Argos Theater was built in 320 BC. and is located in Argos, Greece against Larissa Hill. Nearby from this site is Agora, Roman Odeon, and the Baths of Argos. The theater is one of the largest architectural developments in Greece and was renovated in ca 120 AD.
The Hellenistic theater at Argos is cut into the hillside of the Larisa, with 90 steps up a steep incline, forming a narrow rectilinear cavea. Among the largest theaters in Greece, it held about 20,000 spectators and is divided by two landings into three horizontal sections. Staircases further divide the cavea into four cunei, corresponding to the tribes of Argos A high wall was erected to prevent unauthorized access into the theatron and may have helped the acoustics, but it is said the sound quality is still very good today.
Around 120 CE, both theaters were renovated in the Roman style.