Art of the 20th Century: Gustav Vigeland’s Monolith of Live (1924-1943) and other sculptures in Vigeland Park, Oslo, Norway. Photo credit: Rick Steves' Europe.

Art of the Roman Empire: Library of Celcus (ad 100), at Ephesus, Turkey. Photo: Dominic Arizona Bonuccelli.

Art of the Neoclassical and Romantic Ages: Rick Steves takes a break from filming at the Louvre Museum in Paris, France. Photo credit: Rick Steves' Europe.

Art of the Early Middle Ages: St. Mark’s Basilica (1063), Venice, Italy. Photo credit: Dominic Arizona Bonuccelli.