From the Piazza del Popolo four great lines of thoroughfare intersect
the city, and passing up one of these for a few hundred yards we may
count five lines. First we take the centre thoroughfare; then the two
lines on its right; then the two upon its left: in this way, by
dividing Rome up into five Rambles, pointing out as we go along every
place of interest to the right and left, we mark out for a day's work
no more than can be thoroughly done. Having thus seen the city, we
take the environs outside each gate, commencing at the Porta del
Popolo and working round by the east, with the exception of the Porta
Appia, which leads out on to the Appian Way. As this Way presents so
many points of interest, and as no visitor should think of leaving
Rome without "doing it," we have made it a special Ramble for their
benefit.