Bangladesh has announced plans to build a refugee camp that could accommodate around 800,000 Rohingya Muslims pouring over the border from Myanmar. The camp would be the largest in the world. The UN's refugee agency estimates there are an unprecedented 65.5 million refugees in the world today, split between urban centres or informal settlements, and more formal camps. Here are some of the largest of these camps, based on UN figures.

BIDIBIDI, UGANDA: 285,000 

This vast settlement in far northern Uganda has sprung up over the past year as people flood out of South Sudan, fleeing civil war and severe food shortages.

A village in the Yumbe district on the South Sudan border, Bidibidi became a refugee settlement in August 2016 and now hosts nearly 285,000 people, according to figures from the UN High Commissioner for Refugees. 

DADAAB, KENYA: 239,500 

The sprawling Dadaab complex 100 kilometres (60 miles) from Kenya's border with Somalia has housed Somali refugees for around 26 years.

There were about 239,500 people in Dadaab at the end of September, according to UN figures. The population peaked at around 485,000 in 2012 following a new influx after famine in Somalia.

 KAKUMA, KENYA: 185,000

This camp on the outskirts of the town of the same name in northwestern Kenya was established in 1992 following the arrival of thousands of people fleeing from southern Sudan during the 1983-2005 war.

Many were young boys who risked being forced into combat. The camp also took in some of the hundreds of thousands of Ethiopians who fled around the fall of the military government in 1991. 

NYARUGUSU, TANZANIA: 139,630

Just 37 kilometres from the border with Burundi, this camp was opened in November 1996 to host people fleeing conflict in the neighbouring Democratic Republic of Congo.

Tens of thousands of Burundians arrived in 2015 when their country plunged into crisis after President Pierre Nkurunziza sought a fiercely contested third term. 

ZATAARI, JORDAN: 80,140

About 5.2 million Syrians have left their country since conflict erupted in 2011, the largest migration in the world today. About 20 percent of those in Jordan are in camps, the largest of which is Zataari with about 80,140 people, according to figures for August.