Holy places of Jerusalem are popular with mentally deranged people.

"This exotic disease is labeled by professionals as the Jerusalem syndrome, reports Wednesday Argumenty i Fakty weekly.

[...]

After fighting down policemen who tried to interfere, "Samson" was taken to the Kfar Shaul Psychiatric Hospital in Jerusalem. After therapy treatment he returned back to the USA by himself.
The Hospital diagnoses about a hundred patients obsessed with the syndrome, and about forty of them require hospitalization.
Most of them had been mentally affected in their home countries, and only few opened to the world as "Jesus", "The Virgin Mary", "John the Baptist", "Mohammed" or "Isaiah" in Jerusalem, the weekly reports."

Interfax, Russia, February 13 2008

See also: Jerusalem Syndrome