Direct Answer • Key Takeaway
The Ancestor of the Rotunda Was the Tholus Tholus a Dome (From Latin: Domus) Is an Architectural Element Similar to the Hollow Upper Half of a Sphere; There Is Significant Overlap with the Term Cupola, Which May Also Refer to a Dome or a Structure on Top of a Dome. .. . Domes Have a Long Architectural Lineage That Extends Back into Prehistory. › Wiki › Dome Dome - Wikipedia (Tholos) of Ancient Greece, Which Was Also Circular but Was Usually Shaped Like a Beehive Above. an Example of a Classical Roman Rotunda Is the Pantheon Erected at Rome About Ad 124.
