A view of St. Peter's basilica during the preview to the press of the exhibition 'Petros eni', which is part of the project "St. Peter's Basilica: AI-Enhanced Experience" at the Vatican, Saturday ...

The soaring ceilings of the upper Basilica of St. Francis in Assisi, Italy, were covered in cow's milk at the time they were frescoed, a new analysis of the vaulted dome has revealed.

The basilica opened to the public at 11 a.m. local time (5 a.m. ET) Wednesday and will remain open until midnight. On Thursday and Friday, it will open at 7 a.m. and close at midnight.

This 12th-century Romanesque basilica contains what is believed to be a cloth stained with the blood of Jesus Christ brought back from the Holy Land in the 1100s. It also houses relics from St ...