Most of these buildings are located in the Old Quarter of the city. AuthenticityThe Old City of Salamanca has retained key attributes of authenticity in terms of form, design, materials, and substance. As a place in continuous evolution, the Old City has also been affected by modifications such as urban infrastructure, and building renovation. Protection and management requirementsThe city of Salamanca was registered as “Historic Site” in 1951, the highest legal protection at the national level. Urban planning is under the responsibility of the City of Salamanca and its General Plan sets the general regulations for the entire municipality, including the historic area.