The first photo above is the inner courtyard at the NAC. The 48 orange trees were planted to represent each of the 48 states in the Union (when they were planted there was no Hawaii or Alaska yet and, unfortunately, there is no room for two more trees!). The "Crown of Thorns" fountain in the middle of the courtyard was donated by Cardinal Cushing.
The second photo is the sculptural relief outside the Immaculate Conception chapel here at the NAC. It was donated to the college by the Archdiocese of Philadelphia in memory of Cardinal Dougherty.
The third photo is the view of the dome of St. Peter's from another balcony here at the NAC.
Today we go to St. Peter's Basilica for a tour. Part of our group has already left to climb to the top of the cupola. Since I don't care to die in Rome, I'm waiting for the "on ground" portion of the tour! Tomorrow we return to St. Peter's Basilica (a 20 minute walk from the NAC) for Holy Mass in the crypt; then we pose for our group picture at the obelisk.