How Big Data is being used to protect a Spanish UNESCO World Heritage site
Twentieth-century Spanish novelist Azorín once described Ávila as “the most 16th-century of all Spanish cities,” generously endowed as it is with churches and palaces. Declared a World Heritage Site by UNESCO, it will now continue to live up to this boast in the 21st century by pioneering a European project called Smart Heritage City, aimed at monitoring this and other historical cities. Ávila is leading an EU project that uses technology to monitor potential damage to its famous walls [Credit: Juan Luis Menendez Valderrey] As many as 226 sensors are being installed along the city wall, around the cathedral and on important buildings and streets. These devices, more than half of which are already in action, pick up a huge amount of data concerning humidity, temperature, light, cracks, insects and traffic vibration. “New technology has to be applied to the conservation of monuments because they are very delicate,” says Rosa Ruiz, archaeologist and head of Ávila’s Heritage Department. T