"a mock tholos, Doric by way of Pompeii"

  'Tholos' is an Ancient Greek word for a round building with a conical roof. The Doric order is one of three Greek styles of architecture, alongside Ionic and Corinthian. The Parthenon in Athens is an example of the Doric order, which follows rules of harmony and offers simpler designs than the swirling Ionic or the elaborately carved Corinthian orders.