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Basilica Sotterranea di Porta Maggiore: A Subterranean Sanctuary

Explore a hidden, 1st-century neopythagorean temple beneath Rome's Via Prenestina, adorned with stunning stucco art and steeped in mystery.

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The Basilica Sotterranea di Porta Maggiore, discovered in 1917, is a fascinating, neopythagorean temple dating back to the 1st century AD, located about 9 meters beneath Via Prenestina in Rome. Its stunning stucco decorations and mysterious origins make it a unique and intriguing site.

A brief summary to Basilica Sotterranea di Porta Maggiore

  • Sunday 10 am-1 pm

Local tips

  • Book your guided tour well in advance, as access is limited and visits are often fully booked.
  • Wear comfortable shoes as you'll be walking on uneven surfaces in the underground site.
  • Note that the temperature underground can be cooler than on the surface, so bring a light jacket or sweater.
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Getting There

  • Public Transport

    From Termini Station, take the bus or tram to Via Prenestina. Several bus lines and the tram line 14 connect Termini to Via Prenestina. Get off at the Prenestina/Giovenale stop, which is a 1-minute walk from the Basilica. A single bus/tram ticket costs €1.50 and is valid for 100 minutes.

  • Walking

    From Porta Maggiore, walk along Via Prenestina for about 5 minutes. The Basilica Sotterranea di Porta Maggiore will be on your right at Via Prenestina, 17. The walk is relatively flat and straightforward.

  • Taxi/Ride-sharing

    A taxi or ride-sharing service from Termini Station to the Basilica Sotterranea di Porta Maggiore takes approximately 10-15 minutes, depending on traffic. The estimated cost is €15-€20.

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Discover more about Basilica Sotterranea di Porta Maggiore

Beneath the bustling streets of Rome lies the Basilica Sotterranea di Porta Maggiore, a hidden gem offering a glimpse into the city's ancient past. Discovered by chance in 1917 during railway construction, this neopythagorean basilica dates back to the Tiberian-Claudian era (14-54 AD). The basilica is located approximately 9 meters below the modern Via Prenestina, near Porta Maggiore, a convergence point for ancient Roman aqueducts. To protect it from train vibrations and water infiltration, a concrete container was built around the ancient structure in 1951. The basilica complex includes a corridor (originally the entrance from Via Prenestina), a vestibule, and a main basilical hall. The rectangular hall is divided by six pillars into three naves with vaulted ceilings. The floors feature black and white mosaics, while the walls and vaults are adorned with white stucco decorations. The apse showcases a depiction of Sappho leaping from the Leucadian rock. Other figures relate to classical mythology, mystic rituals, and scenes of daily life. The basilica's function remains a subject of debate, with theories ranging from a neopythagorean temple to a funerary basilica or a site for mystery cults. The basilica is considered the oldest pagan basilica in the Western world. Visits are possible by guided tour only and require advance booking.

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