Piazza della Rotonda the "Iseum Campense", a shrine to the Egyptian god Isis that stood to the southeast of the Pantheon. It was rediscovered in 1374 underneath the apse of the nearby Basilica of Santa Maria sopra Minerva. In the mid-15th century, the obelisk had been erected in the small Piazza di San Macuto some 200 meters east of the Pantheon, where it remained until its 1711 move to the Piazza della Rotonda. It is still called the "Obelisco Macutèo" after its previous location. Piazza della Rotonda The Piazza della Rotonda is a piazza (city square) in Rome, Italy, on the south side
Fontana di Piazza Colonna to the foot of the column of Marcus Aurelius. The source of the water for the fountain of Piazza Colonna was only 67 feet above sea level; like the Trevi Fountain, the Fontana della Barcaccia, and the fountains of Piazza Navona, all connected to the Acqua Vergine, the fountain of Piazza Colonna was unable to jet water high into the air. The original project of Della Porta was to place an antique Roman statue of a sea god, called Marforio, in the fountain, against a background of a rocky grotto, behind which the column of Marcus Aurelius would be seen.