The Seven Halls

The Seven Halls, or Sette Sale, is the name of the complex of cisterns located on the Oppian Hill, Rome.

This large cistern holding over 8 million litres supplied the Baths of Trajan and was fed by a branch aqueduct that came from the Esquiline Hill.

It is on two levels, each consisting of nine (not seven) parallel compartments more than 5 m wide and 30 to 40 m long (differing because of the curve of the eastern perimeter wall).

Also on the ground level of the complex were found the remains of a grotto lined with slabs of marble belonging to the Domus Aurea.

Located at the edge of the park, the cistern is well preserved (entrance on the Via delle Terme di Traiano).