Secret Rome Basilicas and hidden Underground Catacombs Tour

Sited along the Appian way, these catacombs were built after AD 150, with some private Christian hypogea and a funeral area directly dependent on the Catholic Church. It takes its name from the deacon Saint Callixtus, proposed by Pope Zephyrinus in the administration of the same cemetery - on his accession as pope, he enlarged the complex, that quite soon became the official one for the Roman Church. The arcades, where more than fifty martyrs and sixteen pontiffs were buried, form part of a complex graveyard that occupies fifteen hectares and is almost 20 km (12 mi) long.

The Cathedral of the Most Holy Savior and of Saints John the Baptist and the Evangelist in the Lateran, (Italian: Santissimo Salvatore e Santi Giovanni Battista ed Evangelista in Laterano) – also known as the Papal Archbasilica of St. John [in] Lateran, St. John Lateran, or the Lateran Basilica – is the cathedral church of Rome and serves as the seat of the Roman Pontiff. It is the oldest and highest ranking of the four papal major basilicas, giving it the unique title of "archbasilica". Because it is the oldest public church in the city of Rome, it is the oldest and most important basilica of the Western world,and houses the cathedra of the Roman bishop, it has the title of ecumenical mother church of the Catholic faithful.