Interesting to know:

Paris syndrome

Paris syndrome is a transient experience that affects tourists to Paris who find that the City of Light does not live up to their expectations. They may experience hallucinations, delusions of persecution, anxiety and other somatic symptoms. Paris syndrome may sound like a joke, but around twenty Japanese tourists a year are thought to be hospitalised with it. Some think it is brought on by culture shock, as the Japanese have a particularly idealised view of Paris. The usual treatment for Paris syndrome is to go home.

Jerusalem syndrome
Paris does not have the monopoly on causing visitors to be struck down by mental illness.

Some visitors to Jerusalem can become obsessed with the city after arriving.
Those experiencing the syndrome may suffer from anxiety, start wearing a toga, begin singing hymns or shouting out verses from the Bible.
Some even begin giving poorly practised sermons in public.
Estimates place the number of people who require hospital admission from this syndrome at around 40 per year.
As for Paris syndrome, the normal treatment is to go home.

The other 10 are in this link:http://www.spring.org.uk/2014/03/12-...-syndromes.php