Octagonal hall, Rome, Ancient Roman bath complex structure near Termini Station, Rome, Italy.
The Octagonal Hall features a square outer structure with eight internal walls that converge toward a vaulted ceiling supported by structural ribs. This architectural design allowed for an open interior space that once served specific bathing functions.
The structure was built between 298 and 306 CE as part of the Baths of Diocletian and served as a small cold water bathing chamber. The site underwent various transformations over centuries before being preserved for modern access.
This space once served as a cold water bath within a larger bathing complex and was part of daily Roman life. Visitors can observe how such facilities reflected social customs and practices of the time.
The hall is centrally located in Rome and easily accessible via Repubblica metro station or multiple bus lines. Comfortable shoes are recommended and visiting in early morning or late afternoon helps avoid large crowds.
The space was transformed into Europe's largest planetarium in 1928 after serving as a gymnastics school and cinema venue. This diverse history of use demonstrates how adaptable the structure proved to be across different periods.
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