Mamertine Prison

Archaeological museum · Campitelli

Mamertine Prison

Archaeological museum · Campitelli

2

Clivo Argentario, 1, 00186 Roma RM, Italy

Photos

Mamertine Prison by null
Mamertine Prison by scottgun on Flickr (Creative Commons)
Mamertine Prison by The Sanguine Bee (Creative Commons)
Mamertine Prison by Stefano Bolognini (CC BY-SA 3.0)
Mamertine Prison by Mary Harrsch on Flickr (Creative Commons)
Mamertine Prison by Mary Harrsch on Flickr (Creative Commons)
Mamertine Prison by Stefano Bolognini (CC BY-SA 3.0)
Mamertine Prison by The Sanguine Bee (Creative Commons)
Mamertine Prison by Mary Harrsch on Flickr (Creative Commons)
Mamertine Prison by scottgun on Flickr (Creative Commons)
Mamertine Prison by Mary Harrsch on Flickr (Creative Commons)
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null
Mamertine Prison by null

Highlights

Ancient prison said to hold Saints Peter & Paul; Christian significance  

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Clivo Argentario, 1, 00186 Roma RM, Italy Get directions

cultura.gov.it
@omniavaticanrome

Information

Static Map

Clivo Argentario, 1, 00186 Roma RM, Italy Get directions

+39 06 6989 6379
cultura.gov.it
@omniavaticanrome

Features

wheelchair accessible parking lot
wheelchair accessible entrance

Last updated

Oct 8, 2025

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@atlasobscura

The World Turned Upside Down

"While jails and prisons were not a common feature in classical Rome (as execution, exile, and forced labor were a bit more du jour) one ancient lock-up has survived down the ages and it is now said to have held some of the Bible’s most hallowed saints. In the time of ancient Rome (between 600 and 500 BCE) the little jail cell was known as the Tullianum and was actually constructed as a cistern for a spring in the floor of what would become one of the cells. Once the site was converted into a jail, the two cells were created on top of one another with the entrance to the lower cell being a small door in the floor of the upper cell. During their use historic sources have described the cells as dank, torturous dungeons. However inmates rarely stayed long in the jail, usually simply awaiting trial or execution. Eventually the ancient prison took on a great deal of Christian significance (ironic since a number of Christians were imprisoned at the site) thanks to the probably incorrect linking of the place to a tale from the Bible. At some point the small jail was connected to a story of a Christian man being jailed by the Romans and making a spring rise up right in his jail cell. As the site was originally built around the spring in the floor, this is unlikely the same site, but nonetheless, pilgrims from all around began flocking to the prison, and an altar was even put in the lower cell. In fact today the Mamertine Prison is located beneath a large church. The altar that now sits in the lower cell is decorated with an upside down cross, giving the damp dungeon an eerie air. However this inverted symbol is actually a reference to Saint Peter who was thought to have been crucified upside down.    Update as of December 2019: The lower altar is currently undergoing restoration. While the room is still accessible, all artifacts have been moved upstairs to a new museum display." - ATLAS_OBSCURA

https://www.atlasobscura.com/lists/the-world-turned-upside-down
View Postcard for Mamertine Prison
@atlasobscura

10 Places to Explore the Dark Underbelly of Rome

"While jails and prisons were not a common feature in classical Rome (as execution, exile, and forced labor were a bit more du jour) one ancient lock-up has survived down the ages and it is now said to have held some of the Bible’s most hallowed saints. In the time of ancient Rome (between 600 and 500 BCE) the little jail cell was known as the Tullianum and was actually constructed as a cistern for a spring in the floor of what would become one of the cells. Once the site was converted into a jail, the two cells were created on top of one another with the entrance to the lower cell being a small door in the floor of the upper cell. During their use historic sources have described the cells as dank, torturous dungeons. However inmates rarely stayed long in the jail, usually simply awaiting trial or execution. Eventually the ancient prison took on a great deal of Christian significance (ironic since a number of Christians were imprisoned at the site) thanks to the probably incorrect linking of the place to a tale from the Bible. At some point the small jail was connected to a story of a Christian man being jailed by the Romans and making a spring rise up right in his jail cell. As the site was originally built around the spring in the floor, this is unlikely the same site, but nonetheless, pilgrims from all around began flocking to the prison, and an altar was even put in the lower cell. In fact today the Mamertine Prison is located beneath a large church. The altar that now sits in the lower cell is decorated with an upside down cross, giving the damp dungeon an eerie air. However this inverted symbol is actually a reference to Saint Peter who was thought to have been crucified upside down.    Update as of December 2019: The lower altar is currently undergoing restoration. While the room is still accessible, all artifacts have been moved upstairs to a new museum display." - ATLAS_OBSCURA

https://www.atlasobscura.com/lists/rome-underground-st-valentines
View Postcard for Mamertine Prison

Regina Warwick

Google
We came just to see where Apostles Peter and Paul were imprisoned shortly before being martyred, but found a bit more. If you are not interested in religious history you may not find it worth the price or worth the stop. As for us it was enlightening to see the Tullianum and imagine what it would have been like to be held in this dark, damp cellar for so long. I wonder how many guards began to believe in Jesus because you know the Apostles still preached about him.

Brittany Recalde

Google
Went to see where Peter and Paul were imprisoned. Added the tour guide for 5€ more. Totally worth it. Adriana was our guide. She pointed out things I would have never noticed if we walked through on our own. She gave wonderful detail and her story telling was what made the experience memorable. Thank you!

Zwelgje

Google
We came here about 10 years ago and again last December, with our children this time. The visual tour on screen is no longer available, but the audio tour still is if I recall correctly. Worth a visit. Especially for pelgrims. It is strange to be in this place, thinking of the prisoners, including the apostle Peter, who lived there in miserable conditions until their punishment. Thank you for the experience.

M E

Google
Many historical figures got locked up and executed here. Once the door shut, there's only little air and no light. Paul and Peter were held here before being martyred. Paul imprisoned twice, the second one was here. 2Timothy Paul's final letter was believed to be written in this prison or before he was sent here during his time under house arrest in Rome.

Timothy Carmon

Google
Set your expectations low, This prison is interesting to see and envision how Paul and Peter felt awaiting their impending death. Envisioning Paul writing letters of encouragement to fellow believers including his second letter to Timothy. Overall there is not much else to see here. Going down to the prison area and seeing a few replicas of the time is all that you will see.

Joe Skirchak

Google
Don't waste your money. They charge you €10 to climb down a metal spiral stair case to view virtually nothing. It was my only disappointment on this trip. If you really want to see where Peter and Paul were imprisoned, then I guess you will see so value in the visit. It will last no more than 10 minutes.

Josh J

Google
Quick place to visit, nice, not very jail related. Shame we didn't see the water spring(only saw small amount of water in between stone cracks)

Kasey Raia Stout

Google
Before I say anything else, I don't want to take away from the significance of this place, and how amazing it was to physically see where both Paul and Peter were imprisoned at one point. That is truly an invaluable experience. Anyway, it costs 10€ to enter. We did an option with a multimedia guide where they give you a tablet. There was one section that it was beneficial, but the rest it didn't really add much value. The top floor which is really like a museum, did not have much in terms of artifacts or information, but it was a nice introduction to start to grasp what the building was. We walking down to the prison area... There is only a small catwalk that you can stand on. I wish there was seating/more room so that you could meditate/pray down there. We spent a little bit of time down there without disruption which was nice, but I think that was out of luck that the museum wasn't crazy busy. In conclusion, I would say worth the trip if you want to see/feel a meaningful place for the Christian faith.
google avatar

Giovanny E.

Yelp
This prison with dungeon was well known for condemning to death high profile prisoners. Many historical figures got punished by starvation, strangulation, or beheading. Once the door shut, there's only little air and no light. Paul and Peter were held here before being martyred. Paul imprisoned twice, the second one was here. 2Timothy Paul's final letter was believed to be written in this prison.
google avatar

Rebecca R.

Yelp
While roaming around Rome ;) and exploring the area near the Roman Forum (on 10/03/2023), we (my hubby and I) stumbled upon this beautiful old building that had religious murals painted on the outside and had black prison bars going all along the lower level of the building. (see the pics posted w/ this review) There also was an inscription on the front of the building that said "Prigione Dei SS Apostoli Pietro E Paulo" and "MAMERTINUM". Not knowing what this inscription meant...I did what any smart person would do and googled it. ;) It turns out that this was Rome's oldest prison from the 7th century BC, called The Mamertine Prison (Carcere Mamertino in Italian) and is said to have held Saint Peter and Saint Paul as prisoners here! How awesome is that?! (Stumbling across the ancient prison/rich history part, not the saints being prisoners part) Additional helpful tidbits: - - - You can buy tickets to go inside & tour this ancient prison. - - - It's located on Capitoline Hill, next to the Roman Forum. To sum it up...YES, you should definitely add a visit to check out this ancient Rome prison! Till next time, Rebecca visiting from Austin, Texas (United States)

Lynne B.

Yelp
In a city filled with egos it was a nice change of pace to see where Peter and Paul were incarcerated and what they endured for their religious beliefs. Very informative and friendly staff.