It is not known whether an older, pre-Norman church originally stood on the site of current St Peter's Church, but it lies within the site of Roman Moridinum, inside the presumed west gate of the Roman walls. The church, if founded soon after the construction of the Norman castle, was located midway between the castle and the monastic settlement of Llandeulyddog, which is known to have existed before the Norman Conquest.
St Peter's Church is recorded as being transferred to Battle Abbey between 1107 and 1125. The current church building probably dates from later than this, with the nave and chancel dating to the 13th or 14th century. The south aisle and north transept possibly date to the late 14th century. The tower was rebuilt a century after that and a porch added at the same time. The nave and chancel were raised and largely rebuilt during the 16th century.
During the Tudor dissolution of the 1500s St Peter's became the property of the Crown. The Consistory Courts of the Chancellor of the Diocese of St Davids took place at the church and Bishop Robert Ferrar was tried here in 1555.
Until the nineteenth century, St Peter's was the only church in Carmarthen. This changed with the opening of St David's Church in the late 1830s. Repairs and restorations took place during the 19th-century and the current clock was added to the tower in 1903/4.
St Peter's is claimed to be the largest church in Wales and the longest nave in the diocese. The church walls are built from rubble stone with slate roofs. Within the tower there are eight bells, four of which are the original bells cast by Abraham Rudhall of Gloucester in 1722. The south porch was converted into a war memorial chapel in 1969, its door replaced with a pointed window. The main entrance to the church is via the door at the base of the tower.
The main body of the church consists of a long nave and chancel, separated from the south aisle by five arched bays. The hammerbeam roofs were replaced by Buckingham Palace architect, John Nash, in 1785, but these were replaced again in 1861 as part of the mid-nineteenth-century restorations. Many of the windows were replaced in 1846, or altered during the 1860s.
There are a large number of important tombs and memorials inside the church. The tomb of Rhys ap Thomas, reputed to have made the fatal blow to King Richard III, is located inside the church.
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.