page_title: List of Greek and Roman architectural records
section_title: Domes
hierarchical_section_title: List of Greek and Roman architectural records / Domes
caption_attribution_description: Pantheon dome(Oculus)
context_page_description: The list of ancient architectural records consists of record-making architectural achievements of the Greco-Roman world from c. 800 BC to 600 AD.
context_section_description: The largest dome in the world for more than 1,700 years was the Pantheon in Rome. Its concrete dome spans an interior space of 43.45 m, which corresponds exactly to its height from floor to top. Its apex concludes with an 8.95 m wide oculus. The structure remained unsurpassed until 1881 and stills holds the title of the largest unreinforced solid concrete dome in the world. The Pantheon has exercised an immense influence on Western dome construction to this day.
  The largest dome out of clay hollowware ever constructed is the caldarium of the Baths of Caracalla in Rome. The now ruined dome, completed in 216 AD, had an inner diameter of 35.08 m. For reduction of weight its shell was constructed of amphora joined together, a quite new method then which could do without time-consuming wooden centring.
  The largest half-domes were found in the Baths of Trajan in Rome, completed in 109 AD. Several exedrae integrated into the enclosure wall of the compound reached spans up to 30 m.
  The largest stone dome was the Western Thermae in Gerasa, Jordan, constructed around 150–175 AD. The 15 m wide dome of the bath complex was also one of the earliest of its kind with a square ground plan.
caption: Interior of the Pantheon dome
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