Archbasilica of St. John Lateran
“The Basilica was consecrated in 324 (or 318) by Pope Sylvester I, and dedicated to the Most Holy Savior. In the ninth century, Sergio III dedicated it to St. John the Baptist, while in the twelfth century. Lucius II also added St. John the Evangelist.”
Credits
Photos taken by Luke Cabading
Sources
http://www.vatican.va/various/basiliche/san_giovanni/it/basilica/storia.htm
https://en.wikipedia.org/wiki/Archbasilica_of_St._John_Lateran