- Polykleitos’ Canon: Greek sculptor Polykleitos developed a set of ideal proportions for the human body known as the "Canon." This work aimed to represent the perfect balance and symmetry, setting standards for classical sculpture.

- Doric, Ionic, and Corinthian: Greek architecture is renowned for its distinct column styles. The Doric order is the simplest, the Ionic order features elegant scrolls, and the Corinthian order is the most ornate with intricate leaf designs.

- Lost-Wax Casting: Greek sculptors used the lost-wax casting method to create detailed bronze statues. This process involved creating a wax model, coating it in clay, heating it to melt the wax, and then casting bronze into the mold.

- Classical Sculpture: Greek artists progressed from rigid forms to naturalistic and dynamic representations of the human body, as seen in works like Myron’s Discobolus (Discus Thrower).

- Black-Figure and Red-Figure Techniques: Greek pottery techniques included black-figure and red-figure styles. The latter allowed for greater detail and realism in depicting mythological and everyday scenes.

- Veristic Busts: Roman portraiture is known for its realistic and sometimes unflattering depictions, reflecting the values of age and wisdom. This style is exemplified by busts such as those of Julius Caesar.

- Concrete and the Arch: Romans pioneered the use of concrete and arches, enabling the construction of large-scale structures like aqueducts, amphitheaters, and the Pantheon, which featured an impressive dome and oculus.

- Engineering Feat: The Colosseum, or Flavian Amphitheater, was an architectural marvel with a capacity of up to 80,000 spectators. It featured advanced design elements such as a retractable roof and extensive underground chambers.

- Triumphal Arches and Columns: Roman emperors used monumental structures, such as the Arch of Titus and Trajan’s Column, to commemorate victories and display their achievements and power.

- Elaborate Designs: Roman mosaics, created from small pieces of colored stone or glass, decorated floors and walls with intricate patterns and scenes from mythology, daily life, and nature, showcasing skilled craftsmanship.