Director-General of the Archaeological Survey of India, Pravin Srivastava last night inaugurated the event, 'Visual Integrity in Heritage Sites', which has drawn participants from countries like Australia, Cambodia, Costa Rica, Egypt, Germany, Norway and the United States.
Vikassheel Oberoi, India's representative in UNESCO, said that laws on preservation of monuments alone would not help. Guidelines were required to complement those laws, which the four-day event would help draft.