The history of this building- which rises above a little height in a picturesque square- refers to the symbology of the holy places in Jerusalem reproduced in the nearby ecclesiastic complex of Santo Stefano.
The original round church of the 5th century became in 1118 seat of a community of Lateran Regular Canons; it was restored in '200 and reconstructed in gothic style towards the middle of the 15th century.
The polished facade is inspired to the themes of the art of Veneto and Ferrara (1474); it is dominated on the portal by a vigorous Eagle -emblem of the Evangelist John - moulded by Nicolò dell'Arca (c. 1481). Extremely charming is the interior with a nave and two aisles in despite of all the dissipations in the past.
Here were preserved paintings of Ercole de' Roberti, Domenichino, Cima da Conegliano, Perugino, as well as the famous S. Cecilia of Raffaello which is now preserved in the "Pinacoteca Nazionale" (national picture gallery) of Bologna (in the church there is now a copy).
Remarkable are the illustrated glass-windows (15th century), the precious altar-piece of the 14th - 18th century, the sixteenth-century inlayed choir and -in the middle of the church- the peculiar classic column with a reversed capital surmounted by a Romanesque cross which is the unique remainder of the old small chapel of Bologna (the wooden Christ dates back to the 16th century).
The description is taken from the diocesan administration web site: http://www.bologna.chiesacattolica.it