NARA — Representatives from 55 historical cities worldwide wrapped up a three-day meeting Thursday with calls to boost protection of heritage sites against natural disasters, global warming, religious and ethnic conflict, and a form of globalization that emphasizes commercial uniformity over cultural and ethnic diversity.

Increased international travel has brought a corresponding demand for tourist facilities and services, but the delegates in Nara noted that too often cities with distinct histories embrace a form of standardized tourism that offers travelers a uniform experience, especially with chain restaurants and hotels. The result is often loss of local identity.

"Under the influence of rapid globalization, the process of worldwide standardization has moved forward with the result that regional and local uniqueness has been eroded and the establishment of distinctive identities has become more difficult," the leaders said in a declaration adopted at the end of the conference.