The historical character of the city center has been protected since 1981.

The line of the canal has been protected from development since 1992.

It is a public property and has been protected since 1958 with the status number 8/58.

Although protected since 1970, it is considered to be a threatened species.

Both house and farm have been protected monuments since 1986.

The church was registered as a cultural heritage site and has been protected since 2002.

Three of the city's seven hills are protected natural territories since 1995.

Investigators found that at least 58 priests had been protected since the 1960's.

It is also one of the oldest reserves in the world, being protected by law since the 18th century.

The countryside has been protected by tight laws since the 1940s.