In the second half of the 20th century, an Austrian archaeological mission cleaned up the ruins of St. John's Basilica and rebuilt the confession (the tomb of a saint, martyr or the vestibule leading to his tomb placed under the main altar, or the altar) of St. John.

An excerpt from the article 30 facts about Epheseus

Work recently carried out thanks to the support of a religious foundation from Lima (a city in the USA in Ohio) led to the reconstruction of some of the columns and walls of the basilica.