Basilica of St John

Christian tradition has placed his grave here since the late 2nd century. The earliest witnesses are Irenaeus, in Against Heresies, and Polycrates, bishop of Ephesus, in a letter quoted by Eusebius, while the New Testament itself never says that John lived or died at Ephesus⁸. Polycrates wrote that John "fell asleep at Ephesus"⁸.

The grave was venerated on Ayasuluk. Medieval pilgrims reported a healing dust, called manna, rising from it, and Augustine mentions reports that the earth over the tomb seemed to stir as though the saint were breathing⁹. For the early Byzantine centuries this tomb, not any site associated with Mary, was the main pilgrimage goal of Christian Ephesus: Egeria planned to visit in the 380s, the pilgrim Willibald came in 724–726, and Emperor Constantine VI in the 790s¹⁰.

Tradition makes one person of John, son of Zebedee, the “disciple whom Jesus loved”, the author of the Fourth Gospel and John of Patmos, who wrote Revelation; many modern scholars see some or all of these as different people¹¹. Calling the saint of this church John the Apostle follows the tradition; it does not settle the question.

Revelation opens with letters to seven churches in the Roman province of Asia, and Ephesus comes first¹². The letter to the church of Ephesus praises its hard work, endurance and rejection of false apostles, then reproaches it for having left its "first love"¹³.

The link between John and Mary rests on one scene. As Jesus hangs on the cross in John 19:26–27, he gives his mother into the keeping of the beloved disciple, who takes her to live with him, and the tradition that Mary accompanied John grows from those verses¹⁴. The Gospel does not say where. Epiphanius of Salamis noticed in the 4th century that Scripture sends John to Asia without saying that Mary went too¹⁵. No early church writer puts her at Ephesus; the Ephesian tradition first appears centuries later in Syriac authors, and the belief that she died and was buried in Jerusalem is both older and far more common¹⁶. The shrine now known as the House of the Virgin Mary was identified only in 1891¹⁷.

Justinian did not build on an empty site. He replaced a small, ruined older church over the apostle’s traditional grave, and the new building went up around the middle of the 6th century¹⁸. Procopius records the rebuilding in his account of Justinian’s buildings¹. The Austrian archaeologist Peter Scherrer names Theodora as co-builder with her husband¹⁸, and capitals in the nave still carry the monograms of Justinian and the empress⁵.

The Turkish Ministry of Culture gives the church six domes over a three-aisled, cross-shaped plan, while some English-language sources say five⁴. The forecourt, or atrium, is given as about 47 by 34 m and rests on vaulted substructures, because the hillside falls away steeply¹⁹.

The tomb lies under the central dome at the crossing, in a crypt reached by steps². An octagonal baptistery adjoins the north side of the church, and a treasury, the skeuophylakion, adjoins the north transept². The Ministry lists the church, baptistery, treasury and a chapel as the parts of the complex².

The fortified main gate of the St John precinct owes its grim name to a misreading. It carries reused Roman reliefs of the Trojan War, with Achilles, Patroclus and Hector, and 18th-century travellers took them for scenes of Christian martyrdom²³. The name stuck.

The church changed the map of the city. Arab fleets raided Ephesus from the mid-7th century, and a raid in 781 took some 7,000 people captive²⁴. After those raids the precinct around the church was walled, and Byzantine Ephesus gradually recentred itself on the hill²⁵, whose defences were renewed from around the 7th century¹⁸. In time the hill took the church’s dedication as its name: Ayasuluk is what Turkish speakers made of Hagios Theologos²⁶.

The town on the hill lived through the turbulence of the Byzantine frontier. Ephesus belonged to the Thracesian theme from the 7th century and held a profitable annual fair in the 8th²⁷. Paulicians under Chrysocheir attacked or took it in the 860s²⁸. The Seljuk Turks captured it in 1090, and a Byzantine force under John Doukas recovered it in 1096/97²⁹. In December 1147 the Second Crusade’s armies camped at Ephesus and fought the Seljuks close by³⁰. After 1204 Ephesus belonged to the Empire of Nicaea from 1206 and was a centre of learning³¹.

When the town surrendered in October 1304 to Sasa Bey and his Aydınid allies, many of its Christians were driven out, killed or taken as slaves³². For a time the basilica itself served as a mosque, until the İsa Bey Mosque went up below the hill in 1375³³. Under the Aydınids the town became a capital and a trading port dealing with Venice and Genoa³⁴.

Earthquake damage, and the devastation Timur’s army brought to the area in 1402, had left the church in ruins by the late Middle Ages³⁵. Timur then handed the region back to the Aydınid princes³⁶, and Murad II brought it under Ottoman rule for good, probably in 1425, though some sources give 1426³⁷.

The castle on the summit was first built by the Byzantines and repaired by the Aydınids and early Ottomans. Its walls have 15 towers and two gates, east and west, and enclose the remains of a palace, a mosque, a bath and cisterns³⁸. It is a separate circuit from the lower wall around the church precinct, and the two are easily confused³⁸.

The Greek archaeologist Georgios Soteriou dug here in 1920–21, during the Greek occupation, and the Austrian Archaeological Institute excavated from 1926 to 1931, with the results published by Hans Hörmann in 1951; Turkish-led excavation and restoration followed⁶. The partial re-erection of columns and walls was paid for by American religious foundations connected with George B. Quatman and the American Society of Ephesus³⁹. In the 2000s and 2010s Pamukkale University led work under Mustafa Büyükkolancı, and the 2024 season was run under the Ministry of Culture and Tourism with Hatay Mustafa Kemal University⁴⁰.

The Ministry lists the site as Ayasuluk–St Jean and tickets it separately from the ancient city, with the MüzeKart accepted⁷. It has already announced a price rise from 1 April 2027⁴¹, and the basilica appears on the Ministry’s MuseumPass site map⁴². The church is one of several places around Ephesus grouped with Ayasuluk Hill in the World Heritage listing, the site of the Temple of Artemis among them³. Current prices and hours are kept on tickets and opening hours.