Puerto Vallarta, Mexico - The states of Jalisco, Queretaro and Yucatan, and the Federal District will join the "Treasures of Mexico" program, which is dedicated to promoting the high-quality of tourism amenities available in these areas of Mexico.

These entities, organizers said, will be added to Guanajuato, Chiapas, Puebla and Morelos, where the program has worked very well for 10 years.

To join the program, involved properties must meet a strict code, developed jointly by the Mexican Institute for Quality and the Department of Tourism (Tourism Ministry).

This code includes quality standards in tourist services, as well as conservation areas, many of them historic buildings, and respect for the authenticity of the place and the environment.

The assessment includes the decor, amenities, personalized service, respect the local residents show to the environment, and corporate social responsibility, among other standards.