At the end of this walk we recommend to visit San Giovanni in Laterano,
most likely the oldest Christian church in Rome. It is the official church of
Romes bishop (and this is traditionally the pope himself). The buildings belong
to Vatican City, so by entering the church you are leaving Italy. There are no
security checks, though. the church was built from 314 to 335 AD under pope
Silvester I. The Egyptian obelisk is the tallest obelisk in Rome. It was moved
over from the Circus Maximus in 1587.