Narthex in the context of "Early Christian art and architecture"

The Round Church (Bulgarian: Кръгла църква, Kragla tsarkva), also known as the Golden Church (Златна църква, Zlatna tsarkva) or the Church of St John (църква "Свети Йоан", tsarkva "Sveti Yoan"), is a large partially preserved early medieval Eastern Orthodox church. It lies in Preslav, the former capital of the First Bulgarian Empire, today a town in northeastern Bulgaria. The church dates to the early 10th century, the time of Tsar Simeon I's rule, and was unearthed and first archaeologically examined in 1927–1928.

Considered to be one of the most impressive examples of medieval Bulgarian architecture, the Round Church takes its name from the distinctive shape of one of its three sections, the cella (naos), which is a rotunda that serves as a place of liturgy. The church's design also includes a wide atrium and a rectangular entrance area, or narthex, marked by two circular turrets.

The Church of the Nativity, or Basilica of the Nativity, is a basilica located in Bethlehem, West Bank, Palestine. The grotto holds a prominent religious significance to Christians of various denominations as the birthplace of Jesus. The grotto is the oldest site continuously used as a place of worship in Christianity, and the basilica is the oldest major church in the Holy Land.

The church was originally commissioned by Constantine the Great a short time after his mother Helena's visit to Jerusalem and Bethlehem in 325–326, on the site that was traditionally considered to be the birthplace of Jesus. That original basilica was likely built between 330 and 333, being already mentioned in 333, and was dedicated on 31 May 339. It was probably destroyed by fire during the Samaritan revolts of the sixth century, possibly in 529, and a new basilica was built a number of years later by Byzantine Emperor Justinian (r. 527–565), who added a porch or narthex, and replaced the octagonal sanctuary with a cruciform transept complete with three apses, but largely preserved the original character of the building, with an atrium and a basilica consisting of a nave with four side aisles.

A katholikon or catholicon (Greek: καθολικόν) or sobor (Church Slavonic: съборъ) refers to one of three things in the Eastern Orthodox Church:

• The cathedral of a diocese.
• The major church building (temple) of a monastery corresponding to a conventual church in Western Christianity.
• A large church in a city at which all the faithful of the city gather to celebrate certain important feasts rather than go to their local parish church.

The name derives from the fact that it is typically the largest church where all gather together to celebrate the major feast days of the liturgical year. In Russia, it is common for a katholikon to have a smaller church in the basement which can be more easily heated in the winter. A katholikon may have special architectural features in it, such as a cathedra (episcopal throne), or both an esonarthex (inner-narthex) and exonarthex (outer narthex), used for special services such as the Paschal vigil or a lity.

Soba is an archaeological site and former town in what is now central Sudan. Three kingdoms existed in medieval Nubia: Nobadia with the capital in Faras, Makuria with the capital in Dongola, and Alodia (Alwa) with the capital in Soba. The latter used to be the capital of the medieval Nubian kingdom of Alodia from the sixth century until around 1500. E. A. Wallis Budge identified it with a group of ruins on the Blue Nile 19 kilometres (12 mi) from Khartoum, where there are remains of a Meroitic temple that had been converted into a Christian church.

In the 10th century Ibn Selim el-Aswani described the city as large and wealthy, with " fine buildings and extensive feelings " . Built mainly of red brick, the abandoned city was plundered for building material when Khartoum was founded in 1821. Since the 1990s, development from the growth of suburbs in Greater Khartoum has continued to pose a threat to the ruins.

A westwork (German: Westwerk), forepart, avant-corps or avancorpo is the monumental, west-facing entrance section ("west front") of a Carolingian, Ottonian, or Romanesque church. The exterior consists of multiple stories between two towers. The interior includes an entrance vestibule, a chapel, and a series of galleries overlooking the nave. A westwork is usually broader than the width of the nave and aisles. It is sometimes used synonymously with narthex. The structural purpose of the massive westwork is to resolve the horizontal thrust of the east-to-west arcades of the nave. Church towers as a part of a church began with the construction of the first westworks.

Charlemagne dreamt of reviving the Roman Empire in the West. His dream along with his artistic skillset allowed him to implement artwork into buildings with westwork during this time period and can be found in the Corvey Abbey and scattered throughout other westwork buildings today.

Russian churches often have various recurrent elements in their architecture. The onion dome is for example a recurrent and important element in the architecture of Russian churches. Often Russian churches have also multi-colored filigree ornamental elements. Furthermore the colour white plays an important role in the style of Russian churches. In the past, Russian churches were made out of wood. Many Russian Orthodox churches are distinguished by their verticality, bright colors and multiple domes, which provide a striking contrast with the flat Russian landscape, often covered in snow. The first churches in Kievan Rus', such as the 13-domed wooden Cathedral of St. Sophia, Novgorod, differed in this regard from their mainly single-dome Byzantine predecessors. The number of domes was important symbolically. One dome symbolized the single God; three represented the Trinity, and five represented Christ and his four evangelists. At first the baptistery, narthex, and choir gallery above the narthex were a common feature of Rus' churches, but gradually they disappeared. After a century of Byzantine imitations, the Russian masons began to emphasise the verticality in church design.

The late 12th century saw the development of so-called tower churches in Polotsk and Smolensk; this design later spread to other areas such as Kiev and Chernihiv. A visual transition between the main cube of the church and the elongated cylinder below the dome was provided by one or several rows of curved corbel arches, known as kokoshniki. They could be spade-shaped, semicircular, or pointed. In later Muscovite churches, the massed banks of kokoshniki evolved into a distinctive pyramidal shape. The reign of Ivan the Terrible was marked by the introduction of so-called tented roofs. The churches such as St. Basil's Cathedral were an agglomeration of chapels capped by the steeply pitched conical roofs of fanciful designs.

The Dmanisi cathedral of the Theotokos (Georgian: დმანისის ღვთისმშობლის სახელობის საკათედრო ტაძარი, romanized: dmanisis ghvtismshoblis sakhelobis sak'atedro t'adzari), commonly known as the Dmanisi Sioni church (დმანისის სიონი, dmanisis sioni) is an early medieval basilica located in the heart of the Dmanisi historic site, a ruined medieval town in Georgia's southern Kvemo Kartli region, perched on a promontory at the confluence of the Mashavera and Pinezauri rivers. The church has a three-bay nave, a prominently protruding apse, and a richly adorned narthex added in the early 13th century. The Sioni church is a functioning Georgian Orthodox church, renovated in 2009, and protected by the state as an Immovable Cultural Monument of National Significance.