Just like when "wrinkles" make a person beautiful. As in Fossato di Vico (Vico’s Moat)  to discover this passage - appropriately known as the “wrinkles” - which was at the same time as a the path, a defensive system of clever medieval architecture.

Or when one walks through the "waves" of the medieval village of Pietralunga, one can see the Lombard fortress.  Some of the most important examples of defensive buildings can be found here featuring inventive solutions to be admired.

Also worth a visit are the medieval walkways along the citadel at Citerna and the equally interesting are the entrances to the city like Porta Romana to the south and Porta Fiorentina to the north.

Porta dell’Orologio, Porta del Trióne or del rivellino, Porta di Guerrino Gambucci, Porta del Monumento or di S. Lorenzo are the gates to Costacciaro which has the remains of the Rocca del Càssero and the walls with the Civic Tower from the thirteenth century.

In Gualdo Tadino, the castle of Crocicchio, which dates back to 1156 and which was important until the end of the nineteenth century, has now been completely restored and is faring well with passing of time.

Not to mention Gubbio, the medieval medieval town that astonishes everyone; with its Roman walls.

At Lisciano Niccone, the castle has witnessed the passages of the history of Italy, at first under the protection of Perugia, then under the protection of the Pontifical State and finally under the rule of the Kingdom of Italy. Learning about the stages that led to unification of Italy here would be a wonderful lesson in history.

The village of Monte S. Maria Tiberina  boasts the fortress Rocca d’Aries just outside Montone, which has recently been restored.

San Giustino used to be an outpost for Città di Castello on the way to the castle at Umbertide today a centre of contemporary art.

In Valfabbrica, one can go even further back in time, before 1000 AD, it has a castle linked to the Benedictine Abbey of St Mary in "Vado Fabricae", already documented in 820 AD.

Time passes, castles remain.