The Appian Way — Rome’s gateway to the East — was Europe’s first super highway and the wonder of its day. Built in 312 B.C., it connected Rome with Capua (near Naples), running in a straight line for much of the way. Eventually it stretched 400 miles to Brindisi, from where Roman ships sailed to Greece and Egypt. While our modern roads seem to sprout potholes right after they’re built, sections of this marvel of Roman engineering still exist. When I visit Rome, I get a thrill walking on the same stones as Julius Caesar or St. Peter. Huge basalt paving blocks form the sturdy base of this roadway. In its heyday, a central strip accommodated animal-powered vehicles, and elevated sidewalks served pedestrians. Fortunately, about the first 10 miles of the Appian Way is preserved as a regional park (Parco dell’Appia Antica). In addition to the roadway, there are ruined Roman monuments, two major Christian catacombs, and a church marking the spot where Peter had a vision of Jesus.