Andrea Mantegna, San Zeno Altarpiece, 1456-59, oil on panel, 212 x 460 cm / 83 x 180 inches, comissioned by the Benedictine Abbot, Gregorio Correr (Basilica of San Zeno, Verona). Created by Beth Harris and Steven Zucker.

Andrea Pisano, Reliefs for the Campanile in Florence, c. 1336 Speakers: David Drogin and Beth Harris. Created by Beth Harris and Steven Zucker.

The conservator’s eye: Anselm Kiefer, Bohemia Lies by the Sea, 1996, oil, emulsion, shellac, charcoal, and powdered paint on burlap, 75 1/4 in. × 18 ft. 5 inches / 191.1 × 561.3 cm (The Metropolitan Museum of Art). Speakers: Corey D'Augustine and Steven Zucker.

Apollonius, Boxer at Rest, c. 100 B.C.E., bronze, Hellenistic Period (Palazzo Massimo, Museo Nazionale Romano, Rome). Speakers: Dr. Steven Zucker and Dr. Beth Harris. Created by Beth Harris and Steven Zucker.

Apulu (Apollo of Veii), from the roof of the Portonaccio temple, Italy, c. 510-500 B.C.E., painted terracotta, 5 feet, 11 inches high (Museo Nazionale di Villa Giulia, Rome). Speakers: Dr Steven Zucker and Dr. Beth Harris.

Ara Pacis Augustae (Altar of Augustan Peace), 13-9 B.C.E.Speakers: Dr. Beth Harris & Dr. Steven Zucker. Created by Beth Harris and Steven Zucker.

Arch of Constantine, 312-315 C.E., approximately 20m high, 25m wide, and 7m deep, central opening approximately 12m high, Rome. Speakers: Dr. Steven Zucker and Dr. Beth Harris. Video produced by Dr. Naraelle Hohensee, Dr. Beth Harris, and Dr. Steven Zucker.

Triumphal Arch of Septimius Severus, 203 C.E., marble above a travertine base, roughly 23 x 25 m, Roman Forum speakers: Dr. Darius Arya, executive director of the American Institute for Roman Culture and Dr. Beth Harris This video was made in collaboration with the American Institute for Roman Culture.

Take a guided virtual tour of the Scrovegni (Arena) Chapel, in Padova, Italy — thanks to Matthew Brennan. 360-degree video allows you to look around the interior freely, and provides a new perspective on this masterpiece of Italian Renaissance art. See the frescoes up-close and at eye-level, as if you were floating right in front of them, thanks to a new approach developed by Mirror Stage Studio. Narration by SmartHistory: www.smarthistory.org Video production by Mirror Stage: www.mirrorstage.io This video makes use of imagery available in the public domain, as well as provided by Smarthistory. Created by Smarthistory.

Art & Context: Monet's Cliff Walk at Pourville & Malevich's Suprematist Composition: White on White A conversation with Sal Khan, Steven Zucker & Beth Harris. Created by Beth Harris, Steven Zucker, and Sal Khan.

Marcel Duchamp, In Advance of the Broken Arm, 1964 (fourth version, after lost original of November 1915) (MoMA). A conversation with Sal Khan & Steven Zucker. Created by Beth Harris, Steven Zucker, and Sal Khan.

Artemision Zeus or Poseidon, c. 460 B.C.E., bronze, 2.09 m high, Early Classical (Severe Style), recovered from a shipwreck off Cape Artemision, Greece in 1928 (National Archaeological Museum, Athens). Speakers: Dr. Beth Harris and Dr. Steven Zucker. Created by Steven Zucker and Beth Harris.

Francisco de Goya, Third of May, 1808, 1814, oil on canvas, 266 x 345.1 cm (Museo del Prado. Madrid). Created by Beth Harris and Steven Zucker.

Francisco de Goya, Third of May, 1808, 1814, oil on canvas, 266 x 345.1 cm (Museo del Prado. Madrid). Created by Beth Harris and Steven Zucker.

Ashurbanipal Hunting Lions, gypsum hall relief from the North Palace, Ninevah, c. 645-635 B.C.E., excavated by H. Rassam beginning in 1853 (British Museum). Speakers: Dr. Steven Zucker & Dr. Beth Harris

Speakers: Dr. Steven Zucker and Dr. Beth Harris. Created by Steven Zucker and Beth Harris.

Atrial Cross, convento San Agustín de Acolman, mid-16th century Speakers: Dr. Lauren Kilroy-Ewbank and Dr. Beth Harris For more on this cross and more art history: http://smarthistory.org/atrial-cross-acolman/.

Augustus of Primaporta, 1st century C.E. (Vatican Museums). Speakers: Dr. Beth Harris and Dr. Steven Zucker. Created by Beth Harris and Steven Zucker.

Francis Bacon, Triptych - August 1972, 1972, oil on canvas, 72 x 61 x 22 in. (183 x 155 x 64 cm), (Tate Modern, London) . Created by Beth Harris and Steven Zucker.

Baltasar de Echave Ibía, The Hermits, Saint Paul and Saint Anthony, c. 1620, oil on copper, 51.5 x 37.5 cm (Museo Nacional de Arte [MUNAL], Mexico City) Speakers: Dr. Lauren Kilroy-Ewbank and Dr. Steven Zucker. Created by Beth Harris and Steven Zucker.