The Priscilla Catcombs are some of the most extensive and important in Rome. Situated near the centre of the city on the famous Via Salaria (Salt Road), access today is gained through the Benedictine Priscilla Monastery.
The core of the catacombs was originally excavated as a quarry and was subsequently used for burials between the second and fifth century AD. The network extends to around 13km, not all of it accessible to the public. Seven Popes are claimed to have been buried here, although their remains have mostly been relocated and enshrined at churches across Italy. Several hundred Christian martyrs were also interred here.
As well as the tombs themselves, the catacombs contain exceptional wall paintings, dating back to the third century. These include what could be the earliest picture of Mary and Jesus. The entrance route passes through an impressive cryptoporticus (covered corridor); the adjacent Greek Chapel has particularly fine frescoes.
The catacombs make a fascinating visit - not least as they are less full of coach parties than other examples in Rome. Tours take place at fixed times including quite a number with an English-speaking guide. Reservations can be made on the official website