The Vatican unveiled the newly restored frescoes in the Catacombs of Priscilla Tuesday, with Cardinal Ravasi presiding over the opening ceremony.
The catacombs include frescoes dating back to the year 230, including the earliest known image of the Virgin Mary with child.
Other frescoes are said by some to depict women priests in the early Church.
Meanwhile, for the first time ever the Google Maps cam went into the catacombs that stretch for miles, allowing people to virtually tour the underground tunnels.
"If you can find catacombs, if you can find frescos, if you can find museums online, then you will be willing to know more," Georgia Albetino, head of Google's public policy team in Italy, told the Catholic News Agency Tuesday.
"So our objective is actually to have more and more people knowing about worldwide culture and, for us, Italian culture," Albetino said.