Nauru is the world's smallest independent republic. It takes less than an hour to drive round the island.
It has no tourist industry to speak of - most visitors these days are politicians, aid workers or diplomats.
The island is dependent on phosphate mining, although reserves will be exhausted by 2050.
90% of the population is unemployed, and yet crime is almost non-existent.
(image: US State Dept. No need for a tourist map on Nauru.)
There is only one source of fresh water on the island, Buada Lagoon, but it is not safe for swimming.
Drinking water comes from an ageing desalination plant and supplies are limited.
Nauru is subject to periodic outbreaks of typhoid. Drink or use only boiled or bottled water and avoid ice in drinks.
If you suffer from diarrhoea during a visit to Nauru you should seek immediate medical attention.
Dengue fever occurs in Nauru frequently.
Beware of stonefish in the reefs
Beware of wild dogs, some advise carrying a stick to ward them off at all times.
Homosexuality is technically illegal in Nauru, so open displays of affection between same-sex partners may land you in trouble.
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