Steps to preserve the site were taken in the 20th century.

In 2009 additional work was done to preserve the site.

To preserve the site, they have had to give up some elements of modern life.

A determination was made at the time to not preserve the site.

After protests, the town government agreed to preserve the site in 1991.

To preserve the buildings and the site, which is of significant historical importance.

The association is working to preserve the site and to allow visitation.

Over the years, the authorities have tried to preserve the site exactly as it was at the time of the Shah.

The award is given to teachers and students who help preserve historical sites in their communities.

Work was done to clean and preserve the site.