Originally a temple dedicated to all the gods of a particular religion, most famously the Roman Pantheon in Rome with its massive concrete dome.
From Greek 'pan' (all) and 'theos' (god), literally meaning 'all gods.' The term evolved from describing temples honoring multiple deities to referring to the collective body of gods in any mythology.
The Roman Pantheon's dome remained the world's largest unreinforced concrete dome for over 1,300 years, and its oculus (central opening) still represents one of architecture's most perfect marriages of engineering and spirituality—imagine ancient Romans looking up through that opening and seeing it as a direct connection to the heavens!
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