Indonesia's president has decided to switch the country's capital from Jakarta to another city off the main island of Java.
The exact location is still to be decided and could take up to 10 years to implement, said the country's planning minister Bambang Brodjonegoro.
Jakarta has a population of around 10 million, with an estimated 30 million in the larger metropolitan area.
The island of Java is only the fourth largest in Indonesia but is home to more than 140 million people - more than half the country's population.
Palangka Raya on the island of Borneo is said to be favourite to take over as capital.
It is much larger in area than Jakarta and has a population of only around 250,000.
There is also less risk of earthquakes and volcanic eruptions.
The idea of relocating Indonesia's capital has been proposed for decades but President Joko Widodo may have been finally convinced by Jakarta's massive population and environmental reasons.
Other countries that have moved their capital include Nigeria - Lagos to Abuja; Brazil - Rio de Janeiro to Brasilia; Kazakhstan - Almaty to Astana; Myanmar - Yangon to Naypyidaw; Russia - St Petersburg to Moscow; Pakistan - Karachi to Islamabad.
