Todi
is surrounded by three circle of walls which corresponds to the increase
of the population during Etruscan, Roman and Medieval times. We can still
see the third circle of walls built in 13th century ( restored in 1517)
all long the town from Consolazione Church to Porta Romana, the main entrance
to the town( the Roman gate).The building of the third circle of walls
date back to 1244, but it lasted till the first years of 16th century.
Porta Romana, built in 1580, Porta Fratta and Porta Perugina belong to
this circle.
Porta Aurea and Porta Catena belong to the Roman circle
of walls. Porta della Catena, this was the exact name, calls to mind the
custom to close doors with chains in order to prevent any enemy attacks.
Here there is a big ring on the right side where chains were hooked. Porta
Marzia belongs to the first Etruscan circle. Only few fragments are still
intact. The Valle Inferiore Wall, or Lucrezie, is thought to be Etruscan,
but it is actually a Roman construction to stop the sliding of the hill
and to create the terracing upstairs. Along the wall, two mouth tunnels
( the so-called lower Etruscan and higher Etruscan) are still used to
drain water. roman tanks