The Seven Halls, Ancient Roman cistern complex on Oppian Hill, Rome, Italy.
The Seven Halls consists of nine parallel chambers measuring 30 to 40 meters in length, with walls lined in waterproof plaster.
Built around 100 AD, this substantial water reservoir supplied the Baths of Trajan through a branch of the aqueduct from Esquiline Hill.
During medieval times, the northern chambers transformed into catacombs, where excavations in 1967 revealed more than one thousand human remains.
The entrance to this archaeological structure is located on Via delle Terme di Traiano, at the edge of the public park.
The complex earned its name in the eighteenth century when only seven chambers were identified, though nine parallel compartments exist in total.
Part of: Regio III Isis et Serapis
GPS coordinates: 41.89341,12.49654
Latest update: March 3, 2025 14:57
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